Document:

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                                                                    EXHIBIT 10.1

                                     FORM OF
                          REGISTRATION RIGHTS AGREEMENT

     THIS REGISTRATION RIGHTS AGREEMENT is made as of May __, 2004, by and
between NaviSite, Inc., a Delaware corporation (the "Company"), and Surebridge,
Inc., a Delaware corporation ("Surebridge", and together with its permitted
assigns hereunder, the "Investors").

     This Agreement is made pursuant to a certain Asset Purchase Agreement dated
as of May 5, 2004 by and among the Company, a subsidiary of the Company and
Surebridge (the "Purchase Agreement"). The execution of this Agreement is a
condition to the closing of the transactions contemplated by the Purchase
Agreement.

     NOW, THEREFORE, the parties hereto, in consideration of the foregoing, the
mutual covenants and agreements hereinafter set forth, and other good and
valuable consideration, the receipt and sufficiency of which hereby are
acknowledged, agree as follows:

     1.   REGISTRATION STATEMENTS.

     (a)  Initial Registration.

          (i)  The Company shall, on or before the date which is 45 days after
the Closing Date, prepare and file with the Commission a Registration Statement
on Form S-3 or such other appropriate form (the "Initial Registration
Statement") for sale or distribution of the Initial Registrable Securities by
the Investors on a delayed or continuous basis under Rule 415 of the Securities
Act, and shall use its reasonable best efforts to cause such Initial
Registration Statement to be declared effective no later than the 180th day
after the Closing Date. The Company shall at its own expense, subject to Section
1(a)(iv), furnish to the Investors a Prospectus meeting the requirements of
Section 10(a) of the Securities Act during such period as the Company is
obligated to maintain the effectiveness of a Registration Statement pursuant to
Section 1(a)(ii).

          (ii) The Company shall use its reasonable best efforts to cause any
such Initial Registration Statement described in Section 1(a)(i) to remain
effective (or, if required by applicable law, to cause another Registration
Statement with respect to the Initial Registrable Securities to become and
remain effective) until the earlier to occur of: (i) such time as such
securities cease to be Initial Registrable Securities; and (ii) the date which
is two (2) years after the Closing Date.

          (iii) The Company shall, at all times during the Initial Registration
Period, subject to Section 1(a)(iv), as promptly as reasonably practicable: (A)
file such amendments to the Initial Registration Statement and the related
Prospectus, file such documents as may be required to be incorporated by
reference in any of such documents, and take all other reasonable actions in
furtherance of the ability of the holders of Initial Registrable Securities to

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effect the public resale or distribution of their Initial Registrable Securities
(including without limitation taking reasonable actions necessary to ensure the
availability of a Prospectus meeting the requirements of Section 10(a) of the
Securities Act) continuously through the Initial Registration Period.

          (iv) Notwithstanding anything to the contrary in this Agreement, the
Company may suspend the effectiveness of any Registration Statement, the use of
the Prospectus included in any Registration Statement and/or the sales of the
Registrable Securities, if, in its reasonable good faith judgment, (A) the
Company is engaged in a non-public activity or there is a pending material
development the disclosure of which would be materially detrimental to the
Company, (B) maintaining the effectiveness of such Registration Statement at
such time would materially adversely affect a proposed financing, reorganization
or recapitalization of the Company, or pending negotiations relating to a
merger, consolidation, acquisition or similar transaction involving the Company;
or (C) financial statements meeting the requirements of Regulation S-X are not
available at such time; provided, however, that the right of the Company
pursuant to this subsection (iv) to suspend the effectiveness of such
Registration Statement shall not extend for more than 60 total days in any
rolling period of 12 consecutive months during which Registrable Securities are
saleable and not otherwise restricted by the Purchase Agreement, the Notes or
this Agreement; and provided, further, that, if Registrable Securities are
otherwise saleable thereunder and not restricted by the Purchase Agreement, the
Notes or this Agreement, the Company shall give to each holder of Registrable
Securities prior written notice of such suspension at such Holder's most recent
address on file with the Company. Upon receipt of such notice, such holder shall
immediately discontinue any sales of Registrable Securities pursuant to such
Registration Statement.

     (b)  Note Conversion Registration.

          (i)  The Company shall, on or before the date which is 20 days after
the Company's receipt of a written request of the Investors holding at least a
majority of the principal amount of the Notes then outstanding on or after the
Conversion Date, prepare and file with the Commission a Registration Statement
on Form S-3 or such other appropriate form (the "Conversion Registration
Statement") for sale or distribution of the Conversion Registrable Securities by
the Investors on a delayed or continuous basis under Rule 415 of the Securities
Act, and shall use its reasonable best efforts to cause such Conversion
Registration Statement to be declared effective at the earliest practicable date
after the Conversion Date. The Company shall at its own expense, subject to
Section 1(b)(iv), furnish to the Investors a Prospectus meeting the requirements
of Section 10(a) of the Securities Act during such period as the Company is
obligated to maintain the effectiveness of a Registration Statement pursuant to
Section 1(b)(ii). Provided that the Company has (i) provided written notice to
each of the Investors of the request by an Investor or certain Investors to have
the Conversion Registration Statement filed and (ii) given such other investors
six (6) business days to notify the Company that they desire to have their
Conversion Registrable Securities registered thereby, and subject to section
1(b)(ii) below, the Company shall not be obligated to prepare, file or get
effective more than one Conversion Registration Statement.

          (ii) The Company shall use its reasonable best efforts to cause any
such Registration Statement described in Section 1(b)(i) to remain effective
(or, if required by

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applicable law, to cause another Registration Statement with respect to the
Conversion Registrable Securities to become and remain effective) until the
earlier to occur of: (i) such time as such securities cease to be Conversion
Registrable Securities; and (ii) the date which is three (3) years after the
Effective Date of the Conversion Registration Statement.

          (iii) The Company shall, at all times during the Conversion
Registration Period, subject to Section 1(b)(iv), as promptly as reasonably
practicable: (A) file such amendments to the Conversion Registration Statement
and the related Prospectus, file such documents as may be required to be
incorporated by reference in any of such documents, and take all other
reasonable actions in furtherance of the ability of the holders of Conversion
Registrable Securities to effect the public resale or distribution of their
Conversion Registrable Securities (including without limitation taking
reasonable actions necessary to ensure the availability of a Prospectus meeting
the requirements of Section 10(a) of the Securities Act) continuously through
the Conversion Registration Period.

          (iv) Notwithstanding anything to the contrary in this Agreement, the
Company may suspend the effectiveness of any Registration Statement, the use of
the Prospectus included in any Registration Statement and/or the sales of the
Registrable Securities, if, in its reasonable good faith judgment, (A) the
Company is engaged in a non-public activity or there is a pending material
development the disclosure of which would be materially detrimental to the
Company, (B) maintaining the effectiveness of such Registration Statement at
such time would materially adversely affect a proposed financing, reorganization
or recapitalization of the Company, or pending negotiations relating to a
merger, consolidation, acquisition or similar transaction involving the Company;
or (C) financial statements meeting the requirements of Regulation S-X are not
available at such time; provided, however, that the right of the Company
pursuant to this subsection (iv) to suspend the effectiveness of such
Registration Statement shall not extend for more than 60 total days in any
rolling 12 month period; and provided, further, that the Company shall give to
each holder of Conversion Registrable Securities prior written notice of such
suspension at such holder's most recent address on file with the Company. Upon
receipt of such notice, such holder shall immediately discontinue any sales of
Registrable Securities pursuant to such Registration Statement.

     (c)  Amendments. Upon the occurrence of any event that would cause any
Registration Statement (i) to contain a material misstatement or omission or
(ii) not to be effective and usable for resale of Registrable Securities during
the period that such Registration Statement is required to be effective and
usable, the Company shall promptly file an amendment to such Registration
Statement, in the case of clause (i), correcting any such misstatement or
omission, and in the case of either clause (i) or (ii), using its reasonable
best efforts to cause such amendment to be declared effective and such
Registration Statement to become usable as soon as reasonably practicable
thereafter.

     (d)  Representation and Warranty. The Company represents and warrants to
the Investors that (i) any Registration Statement (including any amendments or
supplements thereto and prospectuses contained therein), at the time it is first
filed with the Commission, at the time it is declared effective by the
Commission and at all times during which it is required to be effective
hereunder (and each such amendment and supplement at the time it is filed with
the Commission and at all times during which it is available for use in
connection with the offer and

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sale of the Registrable Securities) shall not contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading and (ii) any Prospectus,
at the time any Registration Statement is declared effective by the Commission
and at all times, subject to Section 1(a)(iv) and Section 1(b)(iv) hereof, that
such Prospectus is required by this Agreement to be available for use by any
Investor and, in accordance with this Agreement, any Investor is entitled to
sell or distribute Registrable Securities pursuant to such Prospectus, shall not
contain any untrue statement of a material fact or omit to state a material fact
required to be stated therein, or necessary to make the statements therein, in
light of the circumstances in which they were made, not misleading.

     (e)  Incidental Registrations.

          (i)  Whenever the Company proposes to file a Registration Statement
(other than Registration Statement No. 333-112087 and any successor registration
statement thereto or a Registration Statement filed pursuant to Section 1 (a) or
1 (b) or on Form S-4 or Form S-8 or their then equivalents) at any time when any
Registrable Securities are not subject to the "Lockup" set forth in Section
5.11(b) of the Purchase Agreement, and from time to time, it will, prior to such
filing, give written notice to the Investors of its intention to do so;
provided, that no such notice need be given if no Registrable Securities are to
be included therein as a result of a determination of the managing underwriter
pursuant to Section 1(e)(ii). Upon the written request of an Investor or
Investors given within 10 business days after the Company provides such notice
(which request shall state the intended method of disposition of such
Registrable Securities), the Company shall use its reasonable best efforts to
cause all Registrable Securities which the Company has been requested to
register by such Investor or Investors to be registered under the Securities Act
to the extent necessary to permit their sale or other disposition in accordance
with the intended methods of distribution specified in the request of such
Investor or Investors; provided that the Company shall have the right to
postpone or withdraw any registration effected pursuant to this Section 1 (e)
without obligation to any Investor.

          (ii) If the registration for which the Company gives notice pursuant
to this Section 1 (e) is a registered public offering involving an underwriting,
the Company shall so advise the Investors as a part of the written notice given
pursuant to Section 1(e)(i). In such event, the right of any Investor to include
its Registrable Securities in such registration statement pursuant this Section
1(e) shall be conditioned upon such Investor's participation in such
underwriting on the terms set forth herein. All Investors proposing to
distribute their securities through such underwriting shall enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for the underwriting by the Company. Notwithstanding any other
provision of this Section 1(e), if the managing underwriter determines that the
inclusion of all shares requested to be registered would adversely affect the
offering, the Company may limit the number of Registrable Securities to be
included in the registration and underwriting. The Company shall so advise all
holders of Registrable Securities requesting registration, and the number of
shares that are entitled to be included in the registration and underwriting
shall be allocated among all Investors requesting registration in proportion, as
nearly as practicable, to the respective number of shares of Common Stock which
they held at the time the Company gives the notice specified in Section 1(e)(i).
If any Investor would thus be entitled to include more securities than such
holder requested to be registered, the excess shall be allocated among other
requesting Investors pro rata in the manner described in the preceding sentence.
If any

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holder of Registrable Securities disapproves of the terms of any such
underwriting, such person may elect to withdraw therefrom by written notice to
the Company, and any Registrable Securities or other securities excluded or
withdrawn from such underwriting shall be withdrawn from such registration.

          (iii) Notwithstanding the foregoing, the Company shall not be
required, pursuant to this Section 1(e), to include any Registrable Securities
in a Registration Statement if such Registrable Securities can then be sold by
the holder thereof pursuant to Rule 144(k) under the Securities Act.

     (f)  Limitations on Subsequent Registration Rights. The Company shall not,
without the prior written consent of Investors holding at least a majority of
the Registrable Securities then held by all Investors, enter into any agreement
(other than this Agreement) with any holder or prospective holder of any
securities of the Company which grant such holder or prospective holder rights
to include securities of the Company in any Registration Statement if such
rights also prohibit the Investors from including Registrable Securities on a
pro rata basis with such holders or prospective holders based on the number of
shares of Common Stock owned by Investors and such holders or prospective
holders.

     2.   REGISTRATION PROCEDURES.

     In connection with any Registration Statement and subject to the provisions
of Section 1, and pursuant thereto the Company shall as expeditiously as
reasonably practicable:

     (a)  prepare and file with the Commission a Registration Statement relating
to the registration on Form S-3 or such other appropriate form under the
Securities Act, which form shall be available for the sale or distribution of
the Registrable Securities being sold in accordance with the intended method or
methods of distribution thereof and shall include all financial statements
required by the Commission to be filed therewith (including, if required by the
Securities Act or any regulation thereunder, financial statements of any
Subsidiary (as defined in Rule 405 under the Securities Act) of the Company
which shall have guaranteed any indebtedness of the Company), cooperate and
assist in any filings required to be made with the NASD and use its reasonable
best efforts to cause such Registration Statement to become effective and
approved by such governmental agencies or authorities as may be necessary to
enable the selling holders to consummate the disposition of such Registrable
Securities;

     (b)  prepare and file with the Commission such amendments and
post-effective amendments to such Registration Statement as may be necessary to
keep such Registration Statement effective for the applicable Registration
Period; in the case of any Registration Statement filed pursuant to Rule 415
under the Securities Act, cause the related Prospectus to be supplemented by any
required Prospectus supplement, and as so supplemented to be filed pursuant to
Rule 424 under the Securities Act, to add any permitted assignee or transferee
of any Investor as a "selling stockholder" therein and to comply fully with the
applicable provisions of Rules 424 and 430A under the Securities Act in a timely
manner, and to comply with the provisions of the Securities Act with respect to
the disposition of all securities covered by such Registration Statement during
the applicable period in accordance with the intended method or

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methods of distribution by the sellers thereof set forth in such Registration
Statement or supplement to the Prospectus;

     (c)  advise the holders of the Registrable Securities promptly (and in any
event within one Business Day, by e-mail, fax or other type of communication)
and, if requested by such Persons, confirm such advice in writing:

          (i)  when any Prospectus or any Prospectus supplement or
post-effective amendment has been filed, and, with respect to such Registration
Statement or any post-effective amendment thereto, when the same has become
effective;

          (ii) of the existence of any fact and the happening of any event that
makes any statement of a material fact made in such Registration Statement, the
Prospectus, any amendment or supplement thereto, or any document incorporated by
reference therein untrue, or that requires the making of any additions to or
changes in such Registration Statement or the Prospectus in order to make the
statements therein not misleading; and

          (iii) of the issuance by the Commission of any stop order or other
order suspending the effectiveness of such Registration Statement, or any order
issued by any state securities commission or other regulatory authority
suspending the qualification or exemption from qualification of such Registrable
Securities under state securities or "blue sky" laws. If at any time the Company
shall receive any such stop order suspending the effectiveness of such
Registration Statement, or any such order from a state securities commission or
other regulatory authority, the Company shall use its reasonable best efforts to
obtain the withdrawal or lifting of such order at the earliest possible time.

     (d)  deliver to each holder of the Registrable Securities, without charge,
as many copies of any Prospectus and any amendment or supplement thereto as such
Person may reasonably request; the Company consents to the use of such
Prospectus and any amendment or supplement thereto by each of the holders of the
Registrable Securities in connection with the offering and the sale or
distribution of the Registrable Securities covered by such Prospectus or any
amendment or supplement thereto;

     (e)  prior to any public offering of Registrable Securities, reasonably
cooperate with the holders of the Registrable Securities and their respective
counsel in connection with the registration and qualification of the Registrable
Securities under the securities or "blue sky" laws of such jurisdictions as the
holders of the Registrable Securities may reasonably request in writing and do
any and all other acts or things reasonably necessary or advisable to enable the
disposition in such jurisdictions of the Registrable Securities covered by such
Registration Statement; provided, that the Company shall not be required in
connection therewith or as a condition thereto to qualify to do business or to
file a general consent to service of process in any such states or
jurisdictions;

     (f)  use its reasonable best efforts to cause the Registrable Securities
covered by such Registration Statement to be registered with or approved by such
other governmental agencies or authorities in the United States as may be
reasonably requested in writing by the seller or distributor thereof to
consummate the disposition of such Registrable Securities;

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     (g)  if any fact or event contemplated by clause (c)(ii) above shall exist
or have occurred, prepare a supplement or post-effective amendment to such
Registration Statement or related Prospectus or any document incorporated
therein by reference or file any other required document so that, as thereafter
delivered to the purchasers of Registrable Securities, such Prospectus will not
contain any untrue statement of a material fact or omit to state any material
fact necessary to make the statements therein not misleading;

     (h)  otherwise use its reasonable best efforts to comply with all
applicable rules and regulations of the Commission;

     (i)  use its reasonable best efforts to cause all applicable Registrable
Securities to be listed on each securities exchange or market, if any, on which
equity securities issued by the Company are then listed; and

     (j)  use its reasonable best efforts to take all other steps reasonably
necessary to effect the registration of the applicable Registrable Securities
contemplated hereby.

     It shall be a condition precedent to the obligations of the Company
hereunder with respect to the registration of the Registrable Securities of a
particular Investor that such Investor shall furnish to the Company such
information regarding itself, the Registrable Securities held by it and the
intended method of disposition of the Registrable Securities held by it as shall
be reasonably requested by the Company in connection with its obligations under
this Agreement and shall execute such other documents in connection with such
registration as the Company may reasonably request.

     Each Investor by such Investor's acceptance of the Registrable Securities
agrees to cooperate with the Company as reasonably requested by the Company in
connection with the preparation and filing of any Registration Statement
hereunder, unless such Investor has notified the Company of such Investor's
election to exclude all of such Investor's Registrable Securities from such
Registration Statement.

     Each holder of the Registrable Securities agrees by acquisition of such
Registrable Securities that, upon receipt of any notice from the Company of the
existence of any fact of the kind described in Section 2(c)(ii), or notice of a
stop order or suspension described in Section 2(c)(iii), such holder shall
forthwith discontinue disposition of Registrable Securities and cease to use the
Prospectus in use under such Registration Statement. The Company shall, as
promptly as practicable, provide each holder with copies of the supplemented or
amended Prospectus contemplated by Section 2(g), or advise the holders in
writing that the use of the Prospectus may be resumed, and promptly provide each
holder with copies of any additional or supplemental filings which are
incorporated by reference in the Prospectus. If so directed by the Company, each
such holder shall deliver to the Company (at the Company's expense) all copies,
other than permanent file copies then in such holder's possession, of the
Prospectus covering such Registrable Securities current at the time of receipt
of such notice.

     If, pursuant to the terms of this Agreement, the Company gives notice to
each holder of Registrable Securities its intention to remove from registration
the Registrable Securities covered by the Registration Statement that have not
been sold, each holder shall notify

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the Company promptly upon the receipt of such notice of the number of
Registrable Securities that are registered but remain unsold.

     3.   REGISTRATION EXPENSES. All reasonable expenses incident to the
Company's performance of or compliance with this Agreement shall be borne by the
Company, regardless of whether a Registration Statement becomes effective,
including without limitation:

     (a)  all registration and filing fees and expenses (including filings made
with the NASD);

     (b)  fees and expenses of compliance with federal securities and state
"blue sky" or securities laws (other than fees and expenses of compliance with
any state "blue sky" or securities laws to qualify such shares for resale in any
state other than The Commonwealth of Massachusetts and any other jurisdiction
pursuant to Section 2(e) of this Agreement);

     (c)  expenses of printing (including printing certificates for the
Registrable Securities and Prospectuses), messenger and delivery services and
telephone;

     (d)  all application and filing fees in connection with listing the
Registrable Securities on a national securities exchange or automated quotation
system pursuant to the requirements hereof; and

     (e)  all fees and disbursements of counsel of the Company and independent
certified public accountants of the Company (including the expenses of any
special audit and "cold comfort" letters required by or incident to such
performance).

     Notwithstanding the foregoing, the Company shall not be liable for any
underwriting commissions, discounts or brokerage fees, and taxes of any kind
(including, without limitation, transfer taxes) applicable to any disposition,
sale or transfer of the Registrable Securities and provided further that the
Company shall not be responsible for any legal, accounting or other
out-of-pocket expenses incurred by the Investors or the holders of the
Registrable Securities in connection with any Registration Statement; and
provided further, the Company shall have no obligation to pay any expenses of
any holder of Registrable Securities in connection with any registration,
qualification or compliance that is withdrawn, delayed or abandoned if such
withdrawal, delay or abandonment is a result of: (i) a request by a holder to
withdraw, delay or abandon such registration, qualification or compliance; (ii)
the failure to comply with the requirements hereof by a holder; or (iii) the
fraud or material misstatement or omission of a material fact by a holder to be
included or required to be included in such registration, qualification or
compliance.

     The Company shall, in any event, bear its internal expenses (including,
without limitation, all salaries and expenses of its officers and employees
performing legal or accounting duties), the expense of any annual audit, rating
agency fees and the fees and expenses of any Person, including special experts,
retained by the Company.

     In addition, notwithstanding anything to the contrary contained herein, the
Company shall pay all of the Investors' reasonable costs and expenses (including
reasonable legal fees) incurred in connection with the enforcement of the rights
of the Investors hereunder.

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     4.   INTENTIONALLY OMITTED.

     5.   STAND-OFF AGREEMENT. Each Investor, if requested by the Company and
the managing underwriter of an underwritten public offering by the Company of
Common Stock, shall not sell or otherwise transfer or dispose of any Registrable
Securities or other securities of the Company held by such Investor for a period
of 90 days following the effective date of a Registration Statement; provided
that (i) all executive officers and directors of the Company and (ii) all Major
Stockholders enter into similar agreements. The Company may impose stop-transfer
instructions with respect to the Registrable Securities or other securities
subject to the foregoing restriction until the end of such 90-day period.

     6.   INDEMNIFICATION.

     (a)  The Company agrees to indemnify and hold harmless each holder of the
Registrable Securities and each Person, if any, who controls such holder within
the meaning of Section 15 of the Securities Act or Section 20 of the Exchange
Act from and against any and all losses, claims, damages, liabilities and
expenses (including, without limiting the foregoing but subject to Section 6(c),
the reasonable legal and other expenses incurred in connection with any action,
suit or proceeding or any claim asserted) to which they may become subject under
the Securities Act, the Exchange Act or other federal or state law, insofar as
such losses, claims, damages or liabilities (or actions in respect thereof)
arise out of or are based upon any untrue statement or alleged untrue statement
of a material fact contained in any Registration Statement or any Prospectus (as
amended or supplemented if the Company shall have furnished any amendments or
supplements thereto) or any preliminary prospectus, or arising out of or based
upon any omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein, in the light
of the circumstances under which they were made, not misleading, except insofar
as such losses, claims, damages, liabilities or expenses are caused by an untrue
statement or omission contained in information relating to such holder,
furnished to the Company in writing by such holder expressly for use therein;
provided, however, that the indemnity agreement contained in this subsection
shall not apply to amounts paid in settlement of any such loss, claim, damage,
liability or action if such settlement is effected without the consent of the
Company, which consent shall not be unreasonably withheld, nor shall the Company
be liable in any such case for any such loss, claim, damage, liability or action
to the extent that a copy of the Prospectus or any amendment thereto relating to
the registration was timely provided to the holder by the Company but not
thereafter sent or given by or on behalf of such holder to the Company of the
holder's Registrable Securities, if required by law to have been delivered, at
or prior to the written confirmation of the sale of the Registrable Securities
to the Company, and if the Prospectus as so amended or supplemented would have
cured the defect giving rise to such loss, claim, damage or liability.

     (b)  As a condition to the inclusion of its Registrable Securities in any
Registration Statement pursuant to this Agreement, each holder thereof shall
furnish to the Company in writing, promptly after receipt of a request therefor,
such information as the Company may reasonably request for use in connection
with any Registration Statement, Prospectus or preliminary prospectus (including
such completed and executed questionnaires as the Company may reasonably
request) and agrees to indemnify and hold harmless, severally and not jointly,
the Company and its directors, its officers who sign such Registration
Statement, and

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any Person controlling the Company within the meaning of Section 15 of the
Securities Act or Section 20 of the Exchange Act to the same extent as the
indemnity from the Company to each holder and Persons controlling such holder,
but only to the extent of losses, claims, damages, liabilities or expenses
caused by (i) an untrue statement or an omission contained in information
relating to such holder furnished in writing by such holder expressly for use in
such Registration Statement or the Prospectus or any preliminary prospectus
included therein, and of which none of the Company, its directors or officers
has any actual knowledge independent of such holder; provided, however, that
such holder of Registrable Securities shall not be liable in any such case to
the extent that the holder has furnished in writing to the Company prior to the
filing of any such Registration Statement, Prospectus or preliminary prospectus
information expressly for use in such Registration Statement, Prospectus or
preliminary prospectus which corrected or made not misleading information
previously furnished to the Company, and the Company failed to include such
information therein; and (ii) any failure of such holder to suspend or cease
sales of Registrable Securities pursuant to the Registration Statement during a
qualifying suspension period provided in this Agreement. In case any action
shall be brought against the Company, any of its directors, any such officer, or
any such controlling Person based on any Registration Statement, the Prospectus
or any preliminary prospectus and in respect of which indemnity may be sought
against one or more of the holders, such holders shall have the rights and
duties given to the Company by Section 6(c) (except that if the Company as
provided in Section 6(c) shall have assumed the defense thereof such holders
shall not be required to do so, but may employ separate counsel therein and
participate in the defense thereof but the fees and expenses of such counsel
shall be at such holder's expense unless the conditions in clauses (i), (ii) and
(iii) of Section 6(c) shall apply) and the Company and its directors, any such
officers, and any such controlling Person shall have the rights and duties given
to the holders by Section 6(c). In no event shall the aggregate liability of any
selling holder hereunder, together with any contribution, be greater than the
net proceeds (i.e., proceeds net of underwriting discounts, fees, commissions
and any other expenses payable by such selling holder) received by such holder
upon the sale of the Registrable Securities giving rise to such indemnification
obligation.

     (c)  In case any action or proceeding (including any governmental or
regulatory investigation or proceeding) shall be brought against any current or
former holder of the Registrable Securities or any Person controlling such
holder, with respect to which indemnity may be sought against the Company
pursuant to Section 6(a), such holder or such Person controlling such holder
shall promptly notify the Company in writing and the Company shall assume the
defense thereof, including the employment of counsel reasonably satisfactory to
such holder and payment of all fees and expenses relating thereto; provided,
that the failure of such holder to give notice as provided herein shall not
relieve the Company of its obligations hereunder except to the extent that the
Company is adversely affected by such failure. Such holder and such Persons
controlling such holder shall have the right to employ separate counsel in any
such action or proceeding and participate in the defense thereof, but the fees
and expenses of such counsel shall be at such holder's expense unless (i) the
employment of such counsel has been specifically authorized in writing by the
Company, (ii) the Company has not assumed the defense and employed counsel
reasonably satisfactory to such holder within 15 days after notice of any such
action or proceeding, or (iii) the named parties to any such action or
proceeding (including any impleaded parties) include both such holder or any
Person controlling such holder and the Company and such holder or any Person
controlling such holder shall have been advised by such counsel that there may
be one or more legal defenses available to such holder or Person

                                       10
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controlling such holder that are different from or additional to those available
to the Company and, in the reasonable opinion of counsel to such holder or
Person controlling such holder, could not be asserted by the Company's counsel
without creating a conflict of interest (in which case the Company shall not
have the right to assume the defense of such action or proceeding on behalf of
such holder or controlling Person, it being understood, however, that the
Company shall not, in connection with any one such action or separate but
substantially similar or related actions in the same jurisdiction arising out of
the same general allegations or circumstances, be liable for the reasonable fees
and expenses of more than one separate firm of attorneys (in addition to all
local counsel which is necessary, in the good faith opinion of both counsel for
the indemnifying party and counsel for the indemnified party in order to
adequately represent the indemnified parties) for all such holders and
controlling Persons, which firm shall be designated in writing by the holders of
a majority of the Registrable Securities currently or formerly held by such
holders and that all such fees and expenses shall be promptly reimbursed as they
are incurred upon written request and presentation of invoices). The Company
shall not be liable for any settlement of any such action effected without the
written consent of the Company (which consent shall not be unreasonably withheld
or delayed), but if settled with the written consent of the Company or if there
is a final judgment for the plaintiff, the Company agrees to indemnify and hold
harmless such holder and all Persons controlling such holder from and against
any loss or liability by reason of such settlement or judgment. The Company
shall not, without the prior written consent of the holder, effect any
settlement of any pending or threatened proceeding in respect of which any
holder or any Person controlling such holder is a party (or a potential party)
and indemnity has been sought hereunder by such holder or any Person controlling
such holder unless such settlement includes an unconditional release of such
holder or such controlling Person from all liability on claims that are the
subject matter of such proceeding.

     (d)  If the indemnification provided for in this Section 6 is unavailable
to an indemnified party under paragraphs (a), (b) or (c) hereof in respect of
any losses, claims, damages, liabilities or expenses referred to therein, then
each indemnifying party, in lieu of indemnifying such indemnified party, shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages, liabilities and expenses in such proportion as
is appropriate to reflect the relative fault of the Company on the one hand and
such holders on the other hand in connection with the statements or omissions
which resulted in such losses, claims, damages, liabilities or expenses, as well
as any other relevant equitable considerations. The relative fault of the
Company on the one hand and such holders on the other hand shall be determined
by reference to, among other things, whether the untrue or alleged untrue
statement of a material fact or the omission to state a material fact relates to
information supplied by the Company on the one hand or by such holders on the
other hand and the parties' relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission. The amount
paid or payable by an indemnified party as a result of the losses, claims,
damages, liabilities or expenses shall be deemed to include, subject to the
limitations set forth above, any legal or other expenses reasonably incurred by
such indemnified party in connection with investigating or defending any such
action or claim.

     (e)  The Company and the holders of the Registrable Securities agree that
it would not be just and equitable if contribution pursuant to this Section 6
were determined by a pro rata allocation or by any other method of allocation
that does not take account of the equitable considerations referred to in
subsection (d) above. The amount paid or payable by an

                                       11
<PAGE>

indemnified party as a result of the losses, claims, damages, liabilities and
expenses referred to in subsection (d) above shall be deemed to include, subject
to the limitations set forth above, any legal or other expenses reasonably
incurred by such indemnified party in connection with investigating any claim or
defending any such action, suit or proceeding. Notwithstanding any other
provision of this Agreement, no holder of the Registrable Securities shall be
required to contribute an amount greater than the net proceeds received by such
holder with respect to the sale of Registrable Securities giving rise to any
indemnification or contribution obligation under this Section 6. No person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the Securities Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.

     7.   RULE 144. The Company agrees with each holder of Registrable
Securities to:

     (a)  use its best efforts to comply with the requirements of Rule 144(c)
under the Securities Act with respect to current public information about the
Company;

     (b)  use its best efforts to file with the Commission in a timely manner
all reports and other documents required of the Company under the Exchange Act
(at any time it is subject to such reporting requirements); and

     (c)  so long as a holder owns any Registrable Securities, furnish to such
holder forthwith upon request (i) a written statement by the Company as to its
compliance with the requirements of said Rule 144(c) and the reporting
requirements of the Exchange Act (at any time it is subject to such reporting
requirements), (ii) a copy of the most recent annual or quarterly report of the
Company as filed with the Commission, and (iii) such other reports and documents
of the Company as such holder may reasonably request to avail itself of any
similar rule or regulation of the Commission allowing it to sell any such
securities without registration.

     8.   INTERPRETATION OF AGREEMENT; DEFINITIONS.

     (a)  Definitions. Unless the context otherwise requires, the terms
hereinafter set forth when used herein shall have the following meanings and the
following definitions shall be equally applicable to both the singular and
plural forms of any of the terms herein defined.

     "AFFILIATE" means, as to any Person, a Person which directly or indirectly
through one or more intermediaries controls, or is controlled by, or is under
common control with, the first Person. The term "control" means the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of a Person, whether through the ownership of voting
stock, through an investment advisory or other fiduciary arrangement, by
contract or otherwise, and the term "controlled" shall have a correlative
meaning.

     "AGREEMENT" means this Registration Rights Agreement and all Schedules
hereto.

     "BUSINESS DAY" means any day other than a Saturday, Sunday or other day on
which banks in Boston are required by law to close or are customarily closed.

                                       12
<PAGE>

     "CLOSING DATE" means the "Closing Date" under the Purchase Agreement.

     "COMMISSION" means the Securities and Exchange Commission as from time to
time constituted, created under the Exchange Act, or, if at any time after the
execution of this Agreement such Commission is not existing and performing the
duties now assigned to it under the Exchange Act, then the Person performing
such duties at such time.

     "COMMON STOCK" means the common stock, $0.01 par value per share, of the
Company.

     "COMPANY" has the meaning assigned in the first paragraph of this
Agreement.

     "CONVERSION DATE" means the date, if any, on which the Investors give
written notice of their intent to convert either the Primary Note or the Escrow
Note into shares of Common Stock pursuant to Section 9 of the Notes.

     "CONVERSION REGISTRABLE SECURITIES" means (a) all shares of Common Stock
received by the Investors upon the conversion of the Notes pursuant to the terms
thereof, including amounts that may be added to the Notes after its original
issuance pursuant to the provisions of the Purchase Agreement; (b) all shares of
Common Stock into which the Notes may be convertible, at the holder's option,
after a Conversion Date; and (c) any shares of capital stock issued or issuable,
from time to time, upon any reclassification, share combination, share
subdivision, stock split, share dividend, merger, consolidation or similar
transaction or event or otherwise as a distribution on, in exchange for, of or
with respect to the shares of Common Stock described in (a) or (b), in each case
held at the relevant time by an Investor. As to any particular securities, such
securities will cease to be Conversion Registrable Securities when (i) they have
been transferred in a public offering registered under the Securities Act, (ii)
they have been transferred in a sale made through a broker, dealer or
market-maker pursuant to Rule 144 under the Securities Act, (iii) the Investors
(including for this purpose the stockholders of Surebridge) are or would be able
to sell all of such securities under Rule 144 under the Securities Act during
any 90-day period without restriction (including without limitation, as to
volume by the holder thereof), (iv) the Investors (including for this purpose
the stockholders of Surebridge) are or would be able to sell all of such
securities under Rule 144(k) under the Securities Act, or (v) they have been
transferred other than as permitted by the Purchase Agreement, the Notes and
this Agreement.

     "CONVERSION REGISTRATION PERIOD" means the period from and after the
Conversion Date until the time determined by Section 1(b)(ii) hereof.

     "CONVERSION REGISTRATION STATEMENT" has the meaning assigned in Section
1(b)(i) of the Agreement.

     "EFFECTIVE DATE" means the date a Registration Statement is declared
effective by the Commission.

     "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

                                      13

<PAGE>
     "INITIAL REGISTRABLE SECURITIES" means (a) the "Parent Shares" under the
Purchase Agreement and (b) any shares of capital stock issued or issuable, from
time to time, upon any reclassification, share combination, share subdivision,
stock split, share dividend, merger, consolidation or similar transaction or
event or otherwise as a distribution on, in exchange for, of or with respect to,
the shares of Common Stock described in (a), in each case held at the relevant
time by an Investor. As to any particular securities, such securities will cease
to be Initial Registrable Securities when (i) they have been transferred in a
public offering registered under the Securities Act, (ii) they have been
transferred in a sale made through a broker, dealer or market-maker pursuant to
Rule 144 under the Securities Act, (iii) the Investors (including for this
purpose the stockholders of Surebridge) are or would be able to sell all of such
securities under Rule 144 under the Securities Act during any 90-day period
without restriction (including without limitation, as to volume by the holder
thereof), (iv) the Investors (including for this purpose the stockholders of
Surebridge) are or would be able to sell all of such securities under Rule
144(k) under the Securities Act, or (v) they have been transferred other than as
permitted by the Purchase Agreement, the Notes and this Agreement.

     "INITIAL REGISTRATION PERIOD" means the period from and after the Effective
Date until the time determined by Section 1(a)(ii) hereof.

     "INITIAL REGISTRATION STATEMENT" has the meaning assigned in Section
1(a)(i) of the Agreement.

     "INVESTORS" means, collectively, Surebridge, and any successors or
permitted assignees of any of its rights hereunder that hold Registrable
Securities, including any stockholder of Surebridge that receives Registrable
Securities in a distribution from Surebridge.

     "MAJOR STOCKHOLDERS" means (i) any Person that, together with its
Affiliates, owns greater than twenty percent (20%) of the Company's outstanding
Common Stock; (ii) for so long as they beneficially own at least ten percent
(10%) of the outstanding stock of the Company, Atlantic Investors, LLC, or any
successor entity, and (iii) any Affiliate of Atlantic Investors, LLC that has
received stock of the Company directly or indirectly from Atlantic Investors,
LLC.

     "NASD" means National Association of Securities Dealers, Inc.

     "NOTES" means the "Primary Note" and the "Escrow Note" under the Purchase
Agreement.

     "PERSON" means any natural person, corporation, partnership, limited
liability company, trust or unincorporated organization, incorporated
government, government agency or political subdivision thereof.

     "PROSPECTUS" means the prospectus included in a Registration Statement, as
amended or supplemented by any prospectus supplement and by all other amendments
thereto, including post-effective amendments, and all material incorporated by
reference into such Prospectus.

                                       14
<PAGE>

     "REGISTRABLE SECURITIES" means the Initial Registrable Securities and the
Conversion Registrable Securities, if any.

     "REGISTRATION PERIOD" means the Initial Registration Period or the
Conversion Registration Period, as applicable.

     "REGISTRATION STATEMENT" means any registration statement of the Company
relating to the registration under the Securities Act for resale or distribution
of Registrable Securities, including any registration statement filed pursuant
to the provisions of this Agreement, including the Prospectus included therein,
all amendments and supplements thereto (including post-effective amendments) and
all exhibits and material incorporated by reference therein.

     "SECURITIES ACT" means the Securities Act of 1933, as amended.

     (b)  Accounting Principles. Where the character or amount of any asset or
liability or item of income or expense is required to be determined or any
consolidation or other accounting computation is required to be made for the
purposes of this Agreement, the same shall be done in accordance with the
generally accepted accounting principles in effect from time to time, to the
extent applicable, except where such principles are inconsistent with the
express requirements of this Agreement including without limitation the
definitions set out in Section 7.

     (c)  Directly or Indirectly. Where any provision in this Agreement refers
to action to be taken by any Person, or which such Person is prohibited from
taking, such provision shall be applicable whether the action in question is
taken directly or indirectly by such Person.

     9.   MISCELLANEOUS.

     (a)  Remedies. Each holder of the Registrable Securities, in addition to
being entitled to exercise all rights provided herein, and granted by law,
including recovery of damages, shall be entitled to seek specific performance of
its rights under this Agreement. The Company agrees that monetary damages may
not be adequate compensation for any loss incurred by reason of a breach by it
of the provisions of this Agreement.

     (b)  No Inconsistent Agreements. The Company shall not, on or after the
date of this Agreement, enter into any agreement with respect to its securities
that is inconsistent with the rights granted to such holders of the Registrable
Securities in this Agreement or otherwise conflicts with the provisions hereof.
The rights granted to the holders hereunder do not in any way conflict with and
are not inconsistent with the rights granted to the holders of the Company's
securities under any other agreements.

     (c)  Amendments and Waivers. The provisions of this Agreement, including
the provisions of this sentence, may not be amended, modified or supplemented,
and waivers or consents to departures from the provisions hereof may not be
given without the written consent of the Company and the holders of a majority
of Registrable Securities then outstanding.

     (d)  Notices. Any notices required or permitted to be given under the terms
of this Agreement shall be in writing and shall be sent by mail, personal
delivery, by telephone line

                                       15
<PAGE>

facsimile transmission or courier and shall be effective three (3) days after
being placed in the mail, if mailed, or upon receipt, if delivered personally,
by telephone line facsimile transmission or by courier, in each case addressed
to a party at such party's address (or telephone line facsimile transmission
number) shown in the introductory paragraph or on the signature page of this
Agreement or such other address (or telephone and facsimile transmission
numbers) as a party shall have provided by notice to the other parties in
accordance with this provision. Such notices shall be delivered to the following
addresses:

                     If to the Company:
                                    NaviSite, Inc.
                                    400 Minuteman Road
                                    Andover, MA 01810
                                    Attention: Ken Drake, Esq.
                                    Telecopy No.: (978) 946-7803

                     With a copy to:
                                    Browne Rosedale Lanouette LLP
                                    31 St. James Avenue, Suite 830
                                    Boston, MA 02116
                                    Attention: Thomas B. Rosedale, Esq.
                                    Telecopy No.: (617) 399-6930

                     If to the Investors:
                                    Surebridge, Inc.
                                    c/o Spectrum Equity Investors, L.P.
                                    One International Place, 29th Floor
                                    Boston, Massachusetts  02110
                                    Attention: Michael J. Kennealy
                                    Facsimile: 617-464-4601

                     With a copy to:

                                    Goodwin Procter LLP
                                    Exchange Place
                                    53 State Street
                                    Boston, MA  02109
                                    Attention: Stuart M. Cable, P.C.
                                    Telecopy No.:  (617) 523-1231

     (e)  Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors and permitted assigns of the Company and the
Investors, including without limitation and without the need for an express
assignment, Affiliates, stockholders, partners and members of the Investors. The
rights and obligations of an Investor under this Agreement shall be
automatically assigned by such Investor to any transferee of all or any portion
of such Investor's Registrable Securities; provided, however, that within a
reasonable time after the transfer, (i) the Company is provided notice of the
transfer including the name and address of the transferee and the number of
Registrable Securities transferred; and (ii) that such permitted transferee
agrees in writing to be bound by the terms of this Agreement and

                                       16
<PAGE>

the Company is provided a copy of the transferee's agreement. Upon any transfer
permitted by this Section 9(e), the Company shall be obligated to such
transferee to perform all of its covenants under this Agreement as if such
transferee were an Investor.

     (f)  Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

     (g)  Governing Law. THE CORPORATE LAW OF THE STATE OF DELAWARE SHALL GOVERN
ALL ISSUES AND QUESTIONS CONCERNING THE RELATIVE RIGHTS AND OBLIGATIONS OF THE
COMPANY AND ITS STOCKHOLDERS. ALL OTHER ISSUES AND QUESTIONS CONCERNING THE
CONSTRUCTION, VALIDITY, ENFORCEMENT AND INTERPRETATION OF THIS AGREEMENT AND THE
EXHIBITS AND SCHEDULES HERETO SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT GIVING EFFECT TO THE CONFLICTS
OF LAW PRINCIPLES THEREOF.

     (h)  Severability. Should any part of this Agreement for any reason be
declared invalid, such decision shall not affect the validity of any remaining
portion, which remaining portion shall remain in force and effect as if this
Agreement had been executed with the invalid portion thereof eliminated and it
is hereby declared the intention of the parties hereto that they would have
executed the remaining portion of this Agreement without including therein any
such part, parts, or portion which may, for any reason, be hereafter declared
invalid.

     (i)  Captions. The descriptive headings of the various Sections or parts of
this Agreement are for convenience only and shall not affect the meaning or
construction of any of the provisions hereof.

     (j)  Waiver of Jury Trial. EACH OF THE COMPANY AND THE INVESTORS WAIVES ANY
RIGHT TO A TRIAL BY JURY IN ANY ACTION OR PROCEEDING TO ENFORCE OR DEFEND ANY
RIGHTS UNDER THIS AGREEMENT OR UNDER ANY AMENDMENT, INSTRUMENT, DOCUMENT OR
AGREEMENT DELIVERED OR WHICH MAY IN THE FUTURE BE DELIVERED IN CONNECTION
HEREWITH OR ARISING FROM ANY RELATIONSHIP EXISTING IN CONNECTION WITH THIS
AGREEMENT, AND AGREES THAT ANY SUCH ACTION OR PROCEEDING SHALL BE TRIED BEFORE A
COURT AND NOT BEFORE A JURY.

     (k)  Final Agreement. THIS WRITTEN AGREEMENT REPRESENTS THE FINAL AGREEMENT
BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.

                [Remainder of this page intentionally left blank]

                                       17
<PAGE>

     IN WITNESS WHEREOF, each of the parties hereto has executed this Agreement,
or caused this Agreement to be duly executed on its behalf, as of the date first
written.

                             NAVISITE, INC.

                             By:
                                     -----------------------------------------

                             Name:
                                      -----------------------------------------

                             Title:
                                      -----------------------------------------

                             SUREBRIDGE, INC.

                             By:
                                      -----------------------------------------

                             Name:
                                      -----------------------------------------

                             Title:
                                      -----------------------------------------

                                       18<PAGE>
                                                                    EXHIBIT 10.2

NEITHER THIS SECURITY NOR ANY SECURITY ISSUABLE UPON CONVERSION HEREOF HAS BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE
SECURITIES LAWS AND MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR
OTHERWISE TRANSFERRED WITHOUT COMPLIANCE WITH THE REGISTRATION OR QUALIFICATION
    PROVISIONS OF APPLICABLE FEDERAL AND STATE SECURITIES LAWS OR APPLICABLE
                              EXEMPTIONS THEREFROM

                                 NAVISITE, INC.

                                 PROMISSORY NOTE

                                 (PRIMARY NOTE)

Principal Amount:  [$____________]                          May __, 2004

      FOR VALUE RECEIVED, the undersigned, NAVISITE, INC., a Delaware
corporation ("NAVISITE"), and each Principal Subsidiary (as defined below) which
is a signatory hereto (NaviSite and such Principal Subsidiaries, collectively,
and jointly and severally, the "COMPANY"), hereby unconditionally promise,
jointly and severally, to pay to the order of SUREBRIDGE, INC. (together with
its successors and/or permitted assigns, the "HOLDER"), in lawful money of the
United States of America and in immediately available funds, the principal
amount of [___________________ UNITED STATES DOLLARS ($_______________)],
together with all accrued and unpaid interest thereon (and any unpaid penalties,
fees, costs or expenses due the Holder hereunder) on this Note.

      The undersigned further agree, jointly and severally, to pay interest as
provided below at the Holder's address referred to below on the unpaid balance
of this Note at the rates per annum and on the dates specified below until paid
in full. Subject to the provisions of the Purchase Agreement (as defined below),
all payments hereunder shall be made for the account of Holder at such Holder's
address, or if the Holder is Surebridge, Inc., to Surebridge, Inc., c/o Spectrum
Equity Investors, One International Place, Boston, MA 02110, or in any case to
such other address as the Holder may designate in accordance with the terms of
Section 14 hereof. If any principal of, or interest on, this Note is not paid
when due or there exists an Event of Default, certain additional interest may be
payable on this Note in accordance with the provisions hereof.

      This Note and the Escrow Note (as herein defined) are being issued to the
Holder in connection with that certain Asset Purchase Agreement, dated as of May
6, 2004 (as amended, supplemented or otherwise modified from time to time, the
"Purchase Agreement"), among Surebridge, Inc., Lexington Acquisition Corp. and
NaviSite. The Purchase Agreement, the Registration Rights Agreement (as defined
in the Purchase Agreement) providing for the
<PAGE>
registration of the Parent Shares (as defined in the Purchase Agreement), the
Escrow Note and this Note are collectively referred to herein as the
"TRANSACTION DOCUMENTS").

      ALL OBLIGATIONS OF THE COMPANY HEREUNDER ARE AND SHALL BE FOR ALL PURPOSES
HEREUNDER AND OTHERWISE THE JOINT AND SEVERAL OBLIGATIONS OF NAVISITE AND ITS
PRINCIPAL SUBSIDIARIES SIGNATORIES HERETO.

1.    Principal Repayment; Mandatory Prepayment.

      The original principal amount of this Note is [$__________]. The original
principal amount is subject to adjustment as set forth in the Purchase
Agreement. This Note shall be surrendered to the Company at such time as any
such adjustments are finally determined and the Company shall cancel this Note
and shall prepare and issue a new replacement note with all terms and provisions
identical to the terms hereof, other than with respect to the principal amount
of the note and with respect to this sentence and the immediately preceding
sentences, both of which sentences shall be omitted from the replacement note.
The Company shall repay the outstanding principal of this Note, together with
all interest accrued thereon and other amounts due in respect thereof on [May
__], 2006 (the "MATURITY DATE").

      After the date hereof, the Company shall prepay all or part of the
outstanding principal balance of this Note and the Escrow Note, together with
all interest accrued and unpaid thereon, and any other amounts due with respect
thereto in an amount equal to seventy-five percent (75%) of all Net Cash
Proceeds (as defined below) within three business days of receipt of Net Cash
Proceeds by the Company (a "MANDATORY Prepayment"). Such Mandatory Prepayment
shall be pro rated between this Note and the Escrow Note based on the total
principal outstanding under both Notes. Payments in respect of this Note shall
be applied, first, to interest accrued and unpaid on the outstanding principal
of this Note and, second, to prepay the principal amount of this Note.
Notwithstanding the foregoing, during the period when the Working Capital
Adjustment is not resolved under Section 1.6 of the Purchase Agreement, and
NaviSite would otherwise be obligated to pay this Note in full as a Mandatory
Prepayment, NaviSite may retain up to $500,000 of the amount otherwise payable
until such time as the Net Working Capital Adjustment is resolved under the
Purchase Agreement.

2.    Optional Prepayment.

      The Company may prepay all or any part of the unpaid principal of this
Note and the Escrow Note, together with all accrued and unpaid interest thereon
and other amounts due in respect thereof, at any time and from time to time
without premium or penalty, provided that in connection with any such
prepayment, the Company, at the Holder's request, shall provide the Holder,
within a reasonable time after receipt of Holder's request, with evidence
reasonably satisfactory to the Holder that such prepayment is not prohibited
under the Company's other outstanding Indebtedness. Other than a prepayment
required by Section 5.22 of the Purchase Agreement, such prepayment shall be pro
rated between this Note and the Escrow Note based on the total principal then
outstanding under both Notes. Payments in respect of this Note shall be applied,
first, to interest accrued and unpaid on the outstanding principal of this Note
and, second, to repay the principal amount of this Note.

                                       2
<PAGE>
3.    Interest.

      Interest shall accrue on the unpaid balance of this Note at the annual
rate of ten percent (10%), and shall be paid in full on the Maturity Date (or
such earlier date as provided herein); provided, however, that if an Event of
Default (as defined below) shall occur and be continuing, all principal and
interest outstanding under this Note shall, as of and after the occurrence of
such Event of Default, bear interest at a rate per annum of fifteen percent
(15%). Interest on this Note shall be computed based on a 360-day year of twelve
30-day months. Notwithstanding the foregoing or anything to the contrary, no
interest shall be due or payable and no interest shall accrue on account of any
principal amount paid to the Holder on or prior to the six month anniversary of
the issuance date of this Note.

4.    Event of Default.

      If any of the following shall occur (each an "EVENT OF DEFAULT"):

      (a) all or any portion of the principal of, or interest on, or other
amounts payable with respect to this Note is not paid when due, and such failure
continues for three business days after receipt of written notice thereof from
the Holder or a holder hereof; or

      (b) there shall have been a material breach by NaviSite of Section 4.10 of
the Purchase Agreement; or

      (c) a proceeding under 11 U.S.C. Sections 101 et seq., as amended,
and any similar or successor Federal statute, and the rules and regulations
thereunder (collectively, the "BANKRUPTCY CODE"), seeking an order for relief or
under any other bankruptcy, reorganization, arrangement of debt, insolvency,
readjustment of debt or receivership law or statute is filed against NaviSite or
any Principal Subsidiary and such proceeding is not dismissed within 60 days of
the date of its filing, or a proceeding under the Bankruptcy Code seeking an
order for relief or under any bankruptcy, reorganization, arrangement of debt,
insolvency, readjustment of debt or receivership law or statute is filed by
NaviSite or any Principal Subsidiary, or NaviSite or any Principal Subsidiary
makes an assignment for the benefit of creditors, or NaviSite or any Principal
Subsidiary authorizes any of the foregoing; or

      (d) NaviSite or any Principal Subsidiary voluntarily or involuntarily
dissolves or is dissolved, or its existence terminates or is terminated (other
than following a merger by any Principal Subsidiary with and into another
Principal Subsidiary or with or into NaviSite) unless NaviSite or such Principal
Subsidiary revives its certificate of incorporation within three business days
thereafter; or

      (e) NaviSite or any Principal Subsidiary fails generally to pay its debts
as they become due; or

      (f) NaviSite or any Principal Subsidiary fails to pay any principal of or
interest on any Debt for Borrowed Money (for purposes of clarity only, such Debt
for Borrowed Money shall not include Capitalized Leases (as defined herein))
having an outstanding principal amount of $500,000 or more ("MATERIAL
INDEBTEDNESS") for a period, with respect to the SVB Line, longer than the grace
or cure period, if any, provided for such payment, or with respect to any

                                       3
<PAGE>
other Material Indebtedness for a period longer than 120 days after the
applicable grace or cure period, if any, provided for such payment; an event of
default is declared under any instrument or agreement evidencing, creating,
securing or otherwise relating to such Material Indebtedness (including without
limitation any guaranty or assumption agreement relating to such Material
Indebtedness) or other event occurs and continues beyond any applicable grace
period, and the effect of such default or other event is to cause, or to permit
the holder or holders of such Material Indebtedness (or their representative) to
cause, such Material Indebtedness (or the obligations under any such guaranty or
assumption agreement) to become due and payable prior to the stated maturity
thereof; or

      (g) NaviSite shall fail to maintain the listing or quotation of its common
stock on the Nasdaq SmallCap Market (unless it obtains a listing or quotation of
its common stock on the Nasdaq National Market or the American Stock Exchange);
or

      (h) NaviSite shall breach any of its covenants contained in Section 5 or
Section 9 hereof; or

      (i) NaviSite shall fail to perform its obligations under Sections 1, 2 or
6 of the Registration Rights Agreement, unless such failure to perform is the
result of actions or omissions by Surebridge; or

      (j) NaviSite shall be acquired or agree to be acquired (which for purposes
hereof, shall mean the acquisition by any party of (i) more than 50% of the
stock or (ii) all or substantially all of the assets of NaviSite) (whether by
merger, consolidation, sale of all or substantially all of its assets or
otherwise) and in connection with such transaction the acquiring party does not
expressly agree in writing to pay the remaining outstanding principal and
accrued interest hereunder or otherwise assume and honor the terms and
provisions of this Note;

then, in any such case, upon the delivery of written notice to NaviSite (subject
to any grace or cure periods identified above) in the manner provided in Section
14 below, the Holder may declare due and payable the principal of, interest on
and other amounts due in respect of, this Note, whereupon the same shall be
immediately due and payable; provided, however, if an Event of Default of the
type described in the preceding clauses (c) or (d) shall occur, then the
principal of, interest on and other amounts due in respect of, this Note shall
be, without any action on the part of the holder hereof, automatically due and
payable immediately upon the occurrence of such an Event of Default. In the
event that this Note becomes or is declared due and payable prior to its stated
maturity, the same shall become due and payable without presentment, demand,
protest or other notice of any kind, all of which are hereby expressly waived.

5.    Covenants.

      (a) Priority of Obligations; Incurrence of Indebtedness. For so long as
any principal shall be outstanding hereunder, or any interest or other amounts
due with respect hereto, shall be outstanding, the Company shall not incur, and
shall not commit itself to, or permit or suffer any of its Subsidiaries to incur
or to commit to incur consolidated (as defined below) Indebtedness (including,
without limitation assume, guarantee, endorse or otherwise be or become
directly, indirectly or contingently liable for Indebtedness of any other
Person) that, together with all

                                       4
<PAGE>
other consolidated Indebtedness of the Company exceeds (or would exceed if so
incurred) $20,500,000 in the aggregate (the "WORKING CAPITAL INDEBTEDNESS"),
unless (i) such Indebtedness is unsecured and expressly subordinated by its
terms, to the reasonable satisfaction of the Holder, to the prior indefeasible
payment in full in cash of this Note, including the principal hereof, interest
accrued thereon and other amounts payable with respect hereto; (ii) such
Indebtedness is Excluded Indebtedness (as defined below); or (iii) the proceeds
of such Indebtedness are used to make a Mandatory Prepayment hereunder.
Notwithstanding the foregoing, if the Company pays any portion of the
outstanding principal balance under the Primary Note and the Escrow Note prior
to the Maturity Date as a Mandatory Prepayment or otherwise, the Working Capital
Indebtedness which is equal to or senior with the indebtedness hereunder that
the Company shall be authorized to incur shall be increased by an amount equal
to all Mandatory Prepayment installments and other payments made by the Company
pursuant hereto. For purposes of this Section 5(a), "EXCLUDED INDEBTEDNESS"
shall mean (i) any indebtedness outstanding under this Note or the Escrow Note;
(ii) any Capitalized Lease obligations of the Company; (iii) the outstanding
unsecured Indebtedness that is identified on SCHEDULE A attached hereto; and
(iv) any promissory note entered into with any of the Company's or its
subsidiaries' landlords, in each case not affiliated with the Company, solely as
part of restructuring of a real estate lease obligation.

      (b) Financial Reporting. Upon written request of a Holder, NaviSite shall
provide to the Holder a copy of all financial and other information provided to
all stockholders of NaviSite concurrently with providing such information to its
stockholders. The financial statements of NaviSite and the related notes
contained in the Public Filings (as defined in the Purchase Agreement) will
present fairly, in accordance with generally accepted accounting principles
(except for the absence of notes, and in the case of unaudited quarterly
financial statements, as permitted by Regulation S-X) the consolidating
financial position of NaviSite as of the dates indicated, and the results of its
operations and cash flows for the periods therein specified (subject in the case
of unaudited financial statements to normal year-end audit adjustments). Such
financial statements (including the related notes) will be prepared in
accordance with generally accepted accounting principles applied on a consistent
basis throughout the periods therein specified, except as disclosed in the
Public Filings.

      (c) Continued Listing. NaviSite will comply with the continued listing
requirements of the Nasdaq Marketplace Rules and will take no action designed
to, or which to its knowledge is likely to have the effect of, terminating the
registration of its common stock under the Exchange Act of 1934 or delisting the
common stock from the Nasdaq SmallCap Market (unless it obtains a listing or
quotation of its common stock on the Nasdaq National Market or the American
Stock Exchange).

      (d) RULE 145. THE HOLDER COVENANTS, FOR PURPOSES OF AND WITHIN THE MEANING
OF RULE 145 UNDER THE SECURITIES ACT OF 1933, AS AMENDED, THAT FOR ONE (1) YEAR
AFTER THE DATE HEREOF, THE HOLDER AND THE HOLDER'S BOARD OF DIRECTORS WILL NOT:
(A) DISTRIBUTE THIS NOTE OR ANY INTERESTS HEREUNDER PRO RATA OR OTHERWISE TO ITS
SECURITYHOLDERS; (B) ADOPT A PLAN OR AGREEMENT THAT PROVIDES FOR DISSOLUTION OR
LIQUIDATION OF THE HOLDER; OR (C) ADOPT A PLAN OR

                                       5
<PAGE>
AGREEMENT THAT PROVIDES FOR A PRO RATA OR SIMILAR DISTRIBUTION OF THIS NOTE TO
THE SECURITYHOLDERS OF THE HOLDER OR OTHERWISE.

6.    Acknowledgment. The Holder acknowledges, understands and agrees that in no
      event shall this Note and the Escrow Note collectively be convertible into
      an aggregate number of shares of NaviSite's Common Stock that is equal to
      or greater than the Share Cap (as defined in the Purchase Agreement)
      unless and until NaviSite has obtained the effective approval of its
      stockholders of those matters described in Section 5.18 of the Purchase
      Agreement.

7.    Legends.

The Holder hereby acknowledges that this Note (unless no longer required in the
opinion of counsel, which opinion and counsel shall be reasonably satisfactory
to the Company, it being agreed that Goodwin Procter LLP shall be satisfactory)
shall bear legends substantially in the following forms:

            THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
            1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES LAWS AND MAY
            NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE
            TRANSFERRED WITHOUT COMPLIANCE WITH THE REGISTRATION OR
            QUALIFICATION PROVISIONS OF APPLICABLE FEDERAL AND STATE SECURITIES
            LAWS OR APPLICABLE EXEMPTIONS THEREFROM.

            IN NO EVENT SHALL THIS PROMISSORY NOTE NOR ANY INTEREST HEREIN OR
            HEREUNDER BE ASSIGNED, CONVEYED, ENCUMBERED, PLEDGED, SOLD,
            DISTRIBUTED OR OTHERWISE TRANSFERRED UNTIL AFTER THE FIRST
            ANNIVERSARY OF THE DATE OF THIS PROMISSORY NOTE.

8.    No Impairment; Obligations Absolute.

      The obligations hereunder of NaviSite and each of the Principal
Subsidiaries shall remain in full force and effect without regard to, and shall
not be impaired by, (A) any bankruptcy, insolvency, reorganization, arrangement,
readjustment, composition, liquidation or the like of NaviSite or any Principal
Subsidiary; (B) any exercise or non-exercise, or any waiver of, any right,
remedy, power or privilege under or in respect of this Note; or (C) any
amendment to this Note, whether or not NaviSite or any Principal Subsidiary
shall have notice or knowledge of any of the foregoing. The obligations of
NaviSite and each Principal Subsidiary are independent of any other obligations
of NaviSite under or in respect of the Purchase Agreement, and a separate action
or actions may be brought and prosecuted against NaviSite or any Principal
Subsidiary to enforce this Note, irrespective of whether any action is brought
against NaviSite under or in respect of the Purchase Agreement. All rights of
the Holder shall be irrevocable, absolute and unconditional irrespective of, and
NaviSite and each Principal Subsidiary hereby irrevocably waives (to the maximum
extent permitted by applicable law) any defenses it may now have or may
hereafter acquire in any way relating to, any or all of the following: (a) any
lack of validity

                                       6
<PAGE>
or enforceability of the Purchase Agreement or any other agreement or instrument
relating thereto; (b) any change in the time, manner or place of payment of, or
in any other term of, all or any obligations of NaviSite under or in respect of
the Purchase Agreement or any other amendment or waiver of or any consent to any
departure therefrom; (c) any change, restructuring or termination of the
corporate structure or existence of NaviSite or any Principal Subsidiary; or (d)
any other circumstance or any existence of or reliance on any representation by
the Holder or any other holder that might otherwise constitute a defense
available to, or a discharge of, NaviSite or any Principal Subsidiary.

9.    Conversion.

      The outstanding principal of this Note, all accrued and unpaid interest
thereon and other amounts in respect thereto shall be converted, if the Holder
so elects, into NaviSite common stock, par value $0.01 per share (the "COMMON
STOCK") in accordance with this Section 9.

      Subject to any express grace or cure periods set forth herein, upon the
written election of the Holder and without payment of any additional
consideration, this Note shall be converted into such whole number of fully paid
and nonassessable shares of Common Stock as is determined by dividing (A) all or
a portion, as elected by the Holder, of the then outstanding principal of this
Note, accrued and unpaid interest thereon, and any other amounts due in respect
thereto by (B) $____________, [AVERAGE CLOSING PRICE FOR THE TEN TRADING DAYS
ENDING ONE DAY PRIOR TO CLOSING] (such formula, the "CONVERSION FORMULA"), with
such Conversion Formula to be appropriately adjusted to account for stock
dividends, stock splits, reverse stock splits, stock combinations or other
events. No fractional shares shall be issued, and the number of shares resulting
from the Conversion Formula shall be rounded down to the nearest whole share.
Any election by the Holder pursuant to this Section 9 shall be made by written
notice to NaviSite, and such notice may be given:

      (a) at any time following the first anniversary of the date hereof until
the eighteen (18) month anniversary hereof if the combined principal amount of
the Primary Note and the Escrow Note then outstanding as of the first
anniversary is greater than or equal to $20,000,000;

      (b) at any time following the eighteen (18) month anniversary hereof if
the combined principal amount of the Primary Note and the Escrow Note
outstanding as of said date is greater than or equal to $10,000,000;

      (c) at any time and from time to time after the second anniversary hereof;
or

      (d) after the occurrence of an Event of Default, provided that if such
Event of Default occurs prior to the effectiveness of the stockholder's approval
contemplated by Section 5.18 of the Purchase Agreement, then this Note and the
Escrow Note collectively shall not be convertible into a number of shares of
NaviSite's Common Stock that is equal to or greater than the Share Cap unless
and until NaviSite has obtained the effective approval of its stockholders of
those matters described in Section 5.18 of the Purchase Agreement.

      Notwithstanding the foregoing, in the event the Holder desires to convert
pursuant to Section 9(a) or 9(b), NaviSite may, within 5 days of receipt of the
Holder's Conversion Notice, notify the Holder of its good faith intent to pay,
within 30 days of NaviSite's receipt of the

                                       7
<PAGE>
Conversion Notice, to the Holder an amount that would cause the $20,000,000
threshold in Section 9(a) or the $10,000,000 threshold in Section 9(b), as
applicable, to be satisfied if such payment had been made on the applicable
anniversary date. In such event, a Holder may only convert pursuant to Section
9(a) or 9(b), as applicable, in the 5 business day period following receipt of
NaviSite's notice of its intent to pay. If the Holder does not convert, the
restriction on conversion set forth in the previous sentence shall expire on the
earlier to occur of (i) receipt from NaviSite of notice that it will not be able
to pay such amounts and (ii) 30 days after NaviSite's receipt of the Conversion
Notice. NaviSite shall act in good faith to promptly deliver the notice in
clause (i) above in the event it becomes reasonably apparent to NaviSite that
NaviSite will not be able to pay such amount in the 30 day period.

      Upon election to convert, the Holder shall surrender this Note, duly
assigned or endorsed for transfer to NaviSite or shall deliver an affidavit of
loss to NaviSite (together with an agreement to indemnify NaviSite in full with
respect to any loss actually incurred with respect to the lost Note), at its
principal executive office or such other place as NaviSite may from time to time
designate by notice to the Holders. Upon surrender of this Note or delivery of
an affidavit of loss (together with an agreement to indemnify NaviSite in full
with respect to any loss actually incurred with respect to the lost Note),
NaviSite shall commence the issuance of, and shall send by hand delivery, by
courier or by first class mail (postage prepaid) to the Holder, or to the
Holder's designee, at the address designated by the Holder, certificates for the
number of shares of Common Stock to which the Holder shall be entitled upon
conversion. The issuance of certificates for Common Stock upon conversion of
this Note shall be deemed effective as of the date of surrender of this Note or
delivery of such affidavit of loss (together with an agreement to indemnify
NaviSite in full with respect to any loss actually incurred with respect to the
lost Note) and will be made without charge to the holder of this Note for any
issuance tax in respect thereof or other costs incurred by NaviSite in
connection with such conversion and the related issuance of such stock. In the
event that the Holder elects to convert pursuant to this Section 9 less than all
of the then outstanding principal of this Note, accrued and unpaid interest
thereon, and any other amounts due in respect thereto, the Company shall issue a
replacement note with the same terms as this Note and a principal equal to the
amount of principal, interest and other amounts not converted into Common Stock
by the Holder.

      NaviSite shall at all times reserve and keep available out of its
authorized but unissued shares of Common Stock, solely for the purpose of
effecting the conversion of this Note as provided hereunder, such number of its
shares of Common Stock as shall from time to time be sufficient to effect the
conversion of this Note as provided hereunder; and if at any time the number of
authorized but unissued shares of Common Stock shall not be sufficient to effect
the conversion of this Note as provided hereunder, NaviSite will take such
corporate action as may be necessary to increase the number of its authorized
but unissued shares of Common Stock to such number of shares as shall be
sufficient for such purpose, and to reserve the appropriate number of shares of
Common Stock for issuance upon such conversion.

      NaviSite and the Holder shall act in good faith in the performance of
their respective covenants hereunder.

                                       8
<PAGE>
10.   No Waivers; Amendments.

      No failure or delay on the part of the Holder or NaviSite in exercising
any right, power or remedy hereunder or under the Purchase Agreement or any
other document executed in connection therewith shall operate as a waiver
thereof, nor shall any single or partial exercise of any such right, power or
remedy preclude any other or further exercise thereof or the exercise of any
other right, power or remedy. The remedies provided for herein and in the
Purchase Agreement and the Registration Rights Agreement are cumulative and are
not exclusive of any remedies that may be available to the Holder at law or in
equity or otherwise.

      Subject to the provisions of Section 11 below on the effect of an
assignment of this Note, this Note may not be amended except by a writing duly
executed and delivered by the Holder (or, if more than one Holder, by those
Holders holding greater than fifty percent (50%) of the total then outstanding
principal amount hereunder) and NaviSite.

11.   Assignment; Lost Note, etc.

      Subject to Holder's compliance with federal and state securities laws to
the reasonable satisfaction of counsel for the Company, after the first
anniversary of the date hereof, the Holder may, prior to maturity or prepayment
thereof, assign all or a portion of this Note, in connection with the
liquidation of the Holder or otherwise, to each stockholder or Affiliate of the
Holder. Prior to such assignment, the Holder shall deliver an opinion of counsel
(which opinion and counsel shall be reasonably satisfactory to the Company, it
being agreed that Goodwin Procter LLP shall be satisfactory) to the effect that
such assignment is exempt from the registration requirements of the Securities
Act of 1933.

      Automatically, upon any assignment of the Note in whole or in part:

      (a) Each reference to "the Holder" shall mean and be a reference to each
assignee holder and all assignee holders, and their successors and assigns;

      (b) Each reference to "the Note" or "this Note" shall mean and be a
reference to each replacement Note and all the Notes issued and outstanding;

      (c) Any reference to the consent, request or satisfaction of the Holder or
like term, and any action to be taken by the Holder, including any amendment to
this Note, any waiver of any provision of this Note, other than an election to
convert this Note under Section 9(a), (b) or (c), shall mean and be a reference
to, and shall require the written consent or approval, of holders of the Notes
holding more than fifty percent (50%) of the principal amount of the Notes then
outstanding, and any such consent, waiver, amendment, election or other action
shall be binding on all of the holders of the Notes; provided that no such
consent, waiver or amendment shall be effective (i) to reduce or eliminate the
obligation to repay the outstanding principal on the Notes and accrued interest
at the rates provided in Section 3; or (ii) to alter or amend the consent
mechanism provided for under Section 10 or this Section 11, without, in the case
of clause (i), the approval of the holders of each Note affected thereby and, in
the case of clause (ii), all holders of the Notes then outstanding; provided
further that each holder of Notes may exercise its rights and remedies as a
creditor of NaviSite and each Principal Subsidiary if an Event of Default shall
have occurred and be continuing.

                                       9
<PAGE>
      (d) Upon any assignment of this Note by the Holder to any Affiliate of the
Holder or to each stockholder of the Holder as set forth above, in order to
efficiently administer (i) the delivering of any notices to holders of the Notes
by the Company, and (ii) the obtaining of any consent, waiver, amendment or
election from, or the taking of any other action by, the holders of the Notes,
the holders of the Notes shall designate a note holder representative (the
"Representative") and shall promptly deliver notice to the Company of such
designation, including the name and contact information for such Representative.
Initially, the Representative shall be Spectrum Equity Investors III, L.P.,
attn: Michael J. Kennealy.

      Upon such assignment of this Note and the designation of the
Representative by the holders of the Notes, the Representative shall be
authorized (i) to take all action necessary in connection with obtaining any
consent, waiver, amendment or election from the holders of the Notes in
accordance with the requirements hereof, (ii) to give and receive all notices
required to be given under the Notes, and (iii) to take any and all additional
action as is contemplated to be taken by or on behalf of the holders of the
Notes by the terms of this Note.

      Upon designation of the Representative by the holders of the Notes, (i)
the Company shall be able to rely conclusively on the instructions and
representations of the Representative as to the taking of any action by, or the
obtaining of any waiver, amendment or consent from the holders of the Notes in
accordance with the requirements of hereof, (ii) any notice delivered by the
Company to the Representative shall be deemed delivered to all holders of the
Notes, and (iii) no holders of the Notes shall have any cause of action against
the Company for any action taken by the Company in reliance upon the
instructions or representations of the Representative.

      In the event that the Representative dies, becomes unable to perform his
responsibilities hereunder or resigns from such position, holders of the Notes
holding more than 50% of the principal amount of the Notes then outstanding
shall promptly select another representative to fill such vacancy and such
substituted representative shall be deemed to be the Representative for all
purposes hereunder.

      The Representative shall not be liable to any holder of the Notes for any
action taken by him pursuant to this Section 11 unless he has acted in bad faith
or engaged in willful or intentional misconduct, and each holder of a Note, by
receipt of such Note, agrees to jointly and severally indemnify the
Representative from any losses arising out of or relating to his service as such
hereunder, it being expressly understood that the Representative shall be
entitled to reimbursement from the holders of the Notes for his costs and
expenses (including, without limitation, reasonable attorneys' fees) incurred by
Representative in his capacity as such, which third-party costs and expenses
may, at the request of the Representative, be paid by the Company to the
Representative at the time of any payment of principal or interest hereunder,
and which shall constitute a reduction in the unpaid balance of this Note.

      (e) At any time at which there are two or more holders of this Note,
NaviSite shall keep a register in which it shall provide for the registration of
the Notes and the registration of transfers of the Notes, and a copy of such
register (and updates thereto) shall be provided to the Representative. The
holder of any Note may, prior to maturity or prepayment thereof, surrender such
Note at the principal office of NaviSite for transfer or exchange. Any holder
desiring to transfer or exchange any Note shall first notify the Company in
writing at least five (5) days in

                                       10
<PAGE>
advance of such transfer or exchange and, if reasonably requested by the
Company, shall deliver an opinion of counsel (which opinion and counsel shall be
reasonably satisfactory to the Company, it being agreed that Goodwin Procter LLP
shall be satisfactory) to the effect that such assignment is exempt from the
registration requirements of the Securities Act of 1933. Within a reasonable
time after such notice to NaviSite from a holder of its intention to make such
exchange and without expense (other than transfer taxes, if any) to such holder,
NaviSite shall issue in exchange therefor another Note in the same aggregate
principal amount or if requested by the holder in denominations of at least
$500,000 and multiples thereof, except in the case of a Note for the balance of
the aggregate amount of the Note so transferred, as of the date of such
issuance, as the unpaid principal amount of the Note so surrendered and having
the same maturity and rate of interest, containing the same provisions and
subject to the same terms and conditions as the Note so surrendered (provided
that no minimum shall apply to a liquidating distribution of Notes to
stockholders of the Holder or any subsequent holder and any Notes so distributed
may be subsequently transferred by such stockholder and its successors in the
original denomination thereof without further restriction). Each new Note shall
be made payable to such Person or Persons, or assigns, as the holder of such
surrendered Note may designate, and such transfer or exchange shall be made in
such a manner that no gain or loss of principal or interest shall result
therefrom. NaviSite shall have no obligation hereunder or under any Note to any
Person other than the registered holder of each such Note at any time that
NaviSite maintains a register of Notes as provided in this paragraph.

      (f) If this Note is mutilated, destroyed, lost or stolen, upon receipt of
evidence satisfactory to NaviSite of such loss, theft, destruction or mutilation
of this Note and, if requested in the case of any such loss, theft or
destruction, upon delivery of an indemnity agreement holding NaviSite harmless,
which agreement is reasonably satisfactory to NaviSite, or, in the case of any
such mutilation, upon surrender and cancellation of this Note, NaviSite and its
Principal Subsidiaries shall issue a new Note of like tenor and amount and dated
the date to which interest has been paid, in lieu of this Note; provided,
however, if any Holder that is an initial holder hereof and this Note is lost,
stolen or destroyed, the affidavit of an authorized partner or officer of such
holder setting forth the circumstances with respect to such loss, theft or
destruction shall be accepted as satisfactory evidence thereof, and no
indemnification bond or other security shall be required as a condition to the
execution and delivery by NaviSite of a new Note in replacement of this Note
other than the holder's written agreement to indemnify NaviSite and hold
NaviSite and its Affiliates harmless from any claims resulting from such loss,
theft, destruction or mutilation.

12.   Method of Payments; Multiple Payees.

      All payments to be made under this Note shall be made in United States
dollars by wire transfer or by check of immediately available funds to the
account or accounts specified by the Holder in writing and delivered to NaviSite
in the manner specified in Section 14 below. If this Note is assigned to one or
more parties pursuant to Section 11 hereof, any payments made by NaviSite
hereunder shall be made to such holders pro rata based on the total principal
outstanding under such notes.

                                       11
<PAGE>
13.   Waiver of Presentment, Etc.

      NaviSite and each Principal Subsidiary hereby waives presentment, demand,
protest and notice of any kind. The Company agrees to pay, on demand, all costs
and expenses of collection of the Note and/or the enforcement of the Holder's
rights hereunder, including reasonable attorney's fees and disbursements.

14.   Notice.

      All notices (including notices of address change), requests, claims,
demands and other communications under this Note will be in writing and will be
deemed given if delivered personally, sent by overnight courier (providing proof
of delivery), or via facsimile to the parties at the following addresses (or at
such other address for a party as specified by like notice):

                  if to the Holder, to:

                  Surebridge, Inc.
                  c/o Spectrum Equity Investors
                  One International Place, 29th Floor
                  Boston, Massachusetts  02110
                  Attention: Michael J. Kennealy
                  Facsimile: 617-464-4601

                  with copy to:

                  Goodwin Procter LLP
                  Exchange Place
                  Boston, MA 02109
                  Attn:  Stuart M. Cable, P.C.
                  Facsimile:  (617) 523-1231

                  If to the Company, to:

                  NaviSite, Inc.
                  400 Minuteman Road
                  Andover, MA 01810
                  Attn:  Ken Drake, Esq.
                  Facsimile:  (978) 946-7803

                  with a copy to:

                  Browne Rosedale & Lanouette LLP
                  31 St. James Avenue, Suite 830
                  Boston, MA 02116
                  Attn:  Thomas B. Rosedale, Esq.
                  Facsimile:  (617) 399-6930

                                       12
<PAGE>
15.   Certain Definitions.

      In addition to the capitalized terms defined elsewhere in this Note, the
following capitalized terms shall have the following definitions. All meanings
of all defined terms in this Note shall be equally applicable to both the
singular and plural forms of the terms defined.

      "AFFILIATE" shall mean, with respect to any specified person, a person
that directly or indirectly through one or more intermediaries, controls, or is
controlled by, or is under common control with, the person specified.

      "BANKRUPTCY CODE" shall have the meaning ascribed thereto in the Purchase
Agreement.

      "CAPITALIZED LEASE" shall mean every obligation of such Person under any
lease required to be capitalized under generally accepted accounting principles
in the United States.

      "CONTROL" (including the terms "controlling," "controlled by" and "under
common control with) shall mean the possession, direct or indirect, of the power
to direct or cause the direction of the management and policies of a person,
whether through the ownership of voting securities, by contract, or otherwise.

      "DEBT FOR BORROWED MONEY" shall mean Indebtedness of the types described
in clause (i) of the definition of the term "Indebtedness" and any guarantee,
endorsement or other obligation in respect of such amounts.

      "EQUITY INTEREST" shall mean any equity security of NaviSite or any
Subsidiary, or any security convertible into any such equity security.

      "ESCROW NOTE" shall have the meaning set forth in the Purchase Agreement.

      "INDEBTEDNESS" shall mean each of the following, as to any Person, whether
recourse is secured by or is otherwise available against all or only a portion
of the assets of such Person, and whether or not contingent, but without
duplication:

      (i) every obligation for such Person for money borrowed;

      (ii) every obligation of such Person evidenced by bonds, debentures, notes
or other similar instruments (but not including obligations evidenced by notes
or similar instruments that are issued in direct connection with the
restructuring or renegotiation of any real estate lease or related obligation
that is not with any Affiliate of NaviSite or any of its subsidiaries) including
obligations incurred in connection with the acquisition of property, assets or
business;

      (iii) every reimbursement obligation of such Person with respect to
letters of credit (other than letters of credit issued in connection with real
estate leases), bankers' acceptances or similar facilities issued for the
account of such Person;

      (iv) every non-equity obligation of such Person issued or assumed as the
deferred purchase price of property or services (including securities repurchase
agreements but excluding

                                       13
<PAGE>
trade accounts payable or accrued liabilities arising in the ordinary course of
business which are on normal trade terms or which are being contested in good
faith);

      (v) every Capitalized Lease;

      (vi) every obligation of such Person under any lease treated as an
operating lease under generally accepted accounting principles and as a loan or
financing for U.S. income tax purposes (a "SYNTHETIC LEASE");

      (vii) all sales by such Person of (i) Accounts, (ii) chattel paper,
instruments or documents creating or evidencing a right to payment of money or
(iii) other receivables (together with the items described in the preceding
clauses (i) and (ii), collectively "RECEIVABLES"), whether pursuant to a
purchase facility or otherwise, other than in connection with the disposition of
the business operations of such Person relating thereto or a disposition of
defaulted receivables for collection and not as a financing arrangement, and
together with any obligation of such Person to pay any discount, interest, fees,
indemnities, penalties, recourse, expenses or other amounts in connection
therewith;

      (viii) every obligation, contingent or otherwise, of such Person
guaranteeing, or having the economic effect of guarantying or otherwise acting
as surety for, any obligation of a type described in any of clauses (i) through
(vii) (the "PRIMARY OBLIGATION") of another Person (the "PRIMARY OBLIGOR"), in
any manner, whether directly or indirectly, and including, without limitation,
any obligation of such Person (a) to purchase or pay (or advance or supply funds
for the purchase of) any security for the payment of such primary obligation,
(b) to purchase property, securities or services for the purpose of assuring the
payment of such primary obligation, or (c) to maintain working capital, equity
capital or other financial statement condition or liquidity of the primary
obligor so as to enable the primary obligor to pay such primary obligation.

The "AMOUNT" or "PRINCIPAL AMOUNT" of any Indebtedness at any time of
determination represented by (u) any Indebtedness, issued at a price that is
less than the principal amount at maturity thereof, shall be the amount of the
liability in respect thereof determined in accordance with generally accepted
accounting principles, (v) any Capitalized Lease shall be the principal
component of the aggregate of the rentals obligation under such Capitalized
Lease payable over the term thereof that is not subject to termination by the
lessee, (w) any sale of receivables shall be the amount of unrecovered capital
or principal investment of the purchasers (other than the Company or any of its
subsidiaries) thereof, excluding amounts representative of yield or interest
earned on such investment, (x) any synthetic lease shall be the stipulated loss
value, termination value or other equivalent amount, (y) any derivative contract
shall be the maximum amount of any termination or loss payment required to be
paid by such Person if such derivative contract were, at the time of
determination, to be terminated by reason of any event of default or early
termination event thereunder, whether or not such event of default or early
termination event has in fact occurred and (z) any equity related purchase
obligation shall be the maximum fixed redemption or purchase price thereof
inclusive of any accrued and unpaid dividends to be comprised in such redemption
or purchase price.

                                       14
<PAGE>
      "NET CASH PROCEEDS" shall mean, with respect to (i) the sale or issuance
of any Equity Interests (as defined above) or (ii) the incurrence of Debt for
Borrowed Money (as defined above) (other than a refinancing of any Debt for
Borrowed Money existing on the date hereof or with respect to borrowings under
the SVB Line) or (iii) the sale of any assets, in each case by or for the
account of NaviSite or any of its Subsidiaries, the aggregate amount of cash
received from time to time by or on behalf of NaviSite (or any Subsidiary) for
its own account in connection with any such sale, issuance or incurrence, after
deducting therefrom reasonable and customary transaction related costs not paid
to an Affiliate of NaviSite or any of its Subsidiaries, including, but not
limited to: (a) brokerage commissions, underwriting fees and discounts, fairness
opinions and fees and expenses of financial advisors, legal fees, accountants'
and auditors' fees, filing and registration fees with the Securities and
Exchange Commission, state securities commissions, Nasdaq fees, Federal Trade
Commission (and other foreign and domestic agencies responsible for antitrust
matters) and other similar fees, success fees, printing costs, costs to Edgarize
and related fees and tax advisory services; and (b) the amount of taxes payable
in connection with or as a result of such sale, issuance or incurrence; in each
case to the extent that the amounts so deducted are properly attributable to
such transaction and are actually paid or are reserved for in accordance with
U.S. generally accepted accounting principles, based on NaviSite's reasonable
estimate, at the time of receipt of such cash by NaviSite or its Subsidiaries,
as applicable. Notwithstanding anything to the contrary, neither (i) cash or
cash equivalents of any businesses or companies acquired by NaviSite after the
date hereof, nor (ii) the proceeds of a single financing or series of financings
that total less than $1,000,000 in the aggregate, shall be included as, or
deemed to be, "Net Cash Proceeds."

      "NOTE" or "NOTES" shall mean this promissory note or the series of
promissory notes issued pursuant to Section 11.

      "PERSON" or "PERSON" shall mean an individual, corporation, partnership,
joint venture, association, estate, joint stock company, trust, organization,
business, or a government or agency or political subdivision thereof.

      "PRIMARY NOTE" shall have the meaning set forth in the Purchase Agreement.

      "PRINCIPAL SUBSIDIARY" shall mean each Subsidiary specifically identified
on SCHEDULE B.

      "SVB LINE" shall mean the Accounts Receivable Financing Line with Silicon
Valley Bank, dated May 27, 2003, as amended.

      "SUBSIDIARY" or "SUBSIDIARY" shall mean with respect to any specified
person, another Person where at least 50% of such Person's issued and
outstanding voting securities is owned, directly or indirectly, by such Person.

16.   Usury Limitation.

      All agreements between the Company and the Holder are hereby expressly
limited so that in no contingency or event whatsoever, whether by reason of
acceleration of maturity of the indebtedness evidenced hereby or otherwise,
shall the amount paid or agreed to be paid to the Holder for the use or the
forbearance of the obligations of NaviSite and its Subsidiaries hereunder exceed
the maximum permissible under applicable law. As used herein, the term

                                       15
<PAGE>
"applicable law" shall mean the law in effect as of the date hereof; provided,
however, that in the event there is a change in the law which results in a
higher permissible rate of interest, then this provision shall be governed by
such new law as of its effective date. In this regard, it is expressly agreed
that it is the intent of NaviSite and each of its Subsidiaries and the Holder in
the execution, delivery and acceptance of this Note to contract in strict
compliance with the laws of The State of Delaware from time to time in effect.
If, under or from any circumstances whatsoever, fulfillment of any provision
hereof at the time of performance of such provision shall be due, shall involve
transcending the limit of such validity prescribed by applicable law, then the
obligation to be fulfilled shall automatically be reduced to the limits of such
validity, and if under or from any circumstances whatsoever the Holder should
ever receive as interest an amount which would exceed the highest lawful rate,
such amount which would be excessive interest shall be applied to the reduction
of the principal balance of the obligations of the Company hereunder, as
determined by the Holder, and not to the payment of interest.

17.   WAIVER OF JURY TRIAL; VENUE.

EACH OF THE HOLDER AND THE COMPANY HEREBY KNOWINGLY, VOLUNTARILY AND
INTENTIONALLY WAIVES THE RIGHT TO A TRIAL BY JURY IN RESPECT OF ANY CLAIM BASED
HEREON, ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS NOTE OR ANY COURSE OF
CONDUCT, COURSE OF DEALINGS, STATEMENTS (WHETHER VERBAL OR WRITTEN) OR ACTIONS
OF ANY PARTY, INCLUDING, WITHOUT LIMITATION, ANY COURSE OF CONDUCT, COURSE OF
DEALINGS, STATEMENTS OR ACTIONS OF THE HOLDER RELATING TO ENFORCEMENT OF THIS
NOTE AND AGREES THAT NO PARTY WILL SEEK TO CONSOLIDATE ANY SUCH ACTION WITH ANY
OTHER ACTION IN WHICH A JURY TRIAL CANNOT BE OR HAS NOT BEEN WAIVED. EXCEPT AS
PROHIBITED BY LAW, EACH OF THE HOLDER AND THE COMPANY HEREBY WAIVES ANY RIGHT IT
MAY HAVE TO CLAIM OR RECOVER IN ANY LITIGATION ANY SPECIAL, EXEMPLARY OR
PUNITIVE DAMAGES OR ANY DAMAGES OTHER THAN, OR IN ADDITION TO, ACTUAL DAMAGES.
THE COMPANY CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF THE HOLDER
HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT THE HOLDER WOULD NOT, IN THE EVENT
OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER. THIS WAIVER CONSTITUTES A
MATERIAL INDUCEMENT FOR THE HOLDER AND EACH OTHER PARTY TO ENTER INTO THIS NOTE.
THE COMPANY AGREES THAT ANY SUIT FOR THE ENFORCEMENT OF THIS NOTE MAY BE BROUGHT
IN THE COURTS OF THE STATE OF DELAWARE OR ANY FEDERAL COURT SITTING IN DELAWARE
AND CONSENTS TO THE NONEXCLUSIVE JURISDICTION OF SUCH COURT AND SERVICE OF
PROCESS IN ANY SUCH SUIT BEING MADE UPON THE COMPANY, BY MAIL AT THE ADDRESS SET
FORTH HEREIN. EACH OF THE COMPANY AND ITS SUBSIDIARIES HEREBY WAIVES ANY
OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE VENUE OF ANY SUCH SUIT OR ANY
SUCH COURT OR THAT SUCH SUIT IS BROUGHT IN AN INCONVENIENT FORUM.

                            [Signature Pages Follows]

                                       16
<PAGE>
      This Note shall be deemed to be under seal and all rights and obligations
hereunder shall be construed and interpreted in accordance with and governed by
the internal laws of the State of Delaware (without giving effect to a conflict
of law practice contained therein).

                                      NAVISITE, INC.

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title

The following Principal Subsidiaries hereby execute this Note with the intention
of being bound, jointly and severally, with the Company as a direct obligor
hereunder.

                                      CLEARBLUE TECHNOLOGIES MANAGEMENT, INC.

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title

                                      AVASTA, INC.

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title

                                      CONXION CORPORATION

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title

                                      INTREPID ACQUISITION CORP.

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title

                                      LEXINGTON ACQUISITION CORP.

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title:

                                       17

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