Document:

<PAGE>

                                                                   EXHIBIT 10.14

                                   SUBLEASE

     1.   Parties:

     This Sublease is made and entered into as of August 6,1999 by and between
Excite, Inc. ("Sublandlord") and Tioga Systems, Inc., a Delaware Corporation,
("Subtenant") under the Master Lease dated March 14, 1997 as amended by the
First Amendment To Lease dated October 1, 1997 (as amended, the "Master Lease")
between Martin/Campus Associates, L.P., as "Lessor" and Sublandlord under this
Sublease as "Lessee". A copy of the Master Lease is attached hereto as
Attachment I and incorporated herein by this reference.

     2.   Provisions Constituting Sublease:

          2.1  This Sublease is subject and subordinate to all of the terms and
conditions of the Master Lease.  Subtenant hereby assumes and agrees to perform
all of the obligations of "Lessee" under the Master Lease to the extent said
obligations apply to the Subleased Premises and Subtenant's use of the Common
Areas, except as specifically set forth herein.  Sublandlord hereby agrees to
use commercially reasonable efforts to cause Lessor to perform all of the
obligations of Lessor under the Master Lease to the extent said obligations
apply to the Subleased Premises and Subtenant's use of the Common Areas.
Subtenant shall not commit or permit to be committed on the Subleased Premises
or on any other portion of the Project any act or omission which violates any
term or condition of the Master Lease.  Except to the extent waived or consented
to in writing by the other party or parties hereto who are affected thereby,
neither of the parties hereto will, by renegotiation of the Master Lease,
assignment, subletting, default or any other voluntary action, avoid or seek to
avoid the observance or performance of the terms to be observed or performed
hereunder by such party, but will at all times in good faith assist in carrying
out all the terms of this Sublease and in taking all such action as may be
necessary or appropriate to protect the rights of the other party or parties
hereto who are affected thereby against impairment.  Nothing contained in this
Section 2.1 or elsewhere in this Sublease:  (i) shall obligate Sublandlord to
exercise its option to extend the Term of the Master Lease; or (ii) shall
prevent or prohibit Sublandlord (a) from exercising its right to terminate the
Master Lease pursuant to paragraph 23 thereof or (b) from assigning its interest
in this Sublease or subletting the Premises to any other third party.

          2.2  All of the terms and conditions contained in the Master Lease are
incorporated herein, except as specifically provided below, and such terms and
conditions, together with the terms and conditions specifically set forth in
this Sublease, shall constitute the complete terms and conditions of this
Sublease, except the following paragraphs of the Master Lease which shall remain
solely the rights and obligations of Sublandlord: 1, 4, 5, 7, 9, 15, 16, 17, 35,
Work Letter C, Exhibit D and E.

     3.   Subleased Premises and Rent:

          3.1  Subleased Premises:  Sublandlord leases to Subtenant and
               ------------------
Subtenant leases from Sublandlord the Subleased Premises upon all of the terms,
covenants and conditions contained in this Sublease.  The Subleased Premises
consist of those portions of the premises located at 575 Broadway, Redwood City,
CA, as displayed in the floor plan attached hereto as Exhibit A, of
                                                      ---------
approximately 23,216=/- square feet.
<PAGE>

          3.2  Rent:  Subtenant shall pay to Sublandlord as Full Service Rent
               ----
for the Subleased Premises the sum of Eighty-One Thousand Two Hundred Fifty-Six
Dollars ($81,256.00) per month, without deductions, prior notice or demand. Rent
shall be payable by Subtenant to Sublandlord in consecutive monthly installments
on or before the first (1st) day of each calendar month from September 1, 1999
through August 14, 2000. Effective September 1, 2000 through August 14, 2001,
the monthly Full Service Rent shall be increased to Eighty-Three Thousand Five
Hundred Seventy-Eight Dollars ($83,578.00). If the Sublease Commencement Date or
the Termination Date of the Sublease occurs on a date other than the first (1st)
day of a calendar month, then the Rent for such partial month shall be prorated
and the prorated Rent shall be payable on the Sublease Commencement Date or on
the first (1st) day of the calendar month in which the Sublease Termination Date
occurs, respectively.

          3.3  Security Deposit:  In addition to the Rent specified above,
               ----------------
Subtenant shall pay to Sublandlord, upon execution of this Sublease, an
equivalent of one month's Rent, the sum of Eighty-One Thousand Two Hundred
Fifty-Six Dollars ($81,256.00), as a non-interest bearing Security Deposit.
Sublandlord may commingle the Security Deposit with its other funds and is not a
trustee of the Security Deposit.  Subtenant is not entitled to interest on the
Security Deposit.  Sublandlord may use the Security Deposit to cure Subtenant's
defaults and to compensate Sublandlord for damages suffered by reason of
Subtenant's defaults.  If Sublandlord so uses a portion of the Security Deposit,
Subtenant must replenish the Security Deposit to its full amount within five (5)
days after written demand.  The Security Deposit shall not be applied by
Subtenant against the last month's Rent.  In the event Subtenant has performed
all of the terms and conditions of this Sublease during the term hereof,
Sublandlord shall return to Subtenant, within ten (10) days after Subtenant has
vacated the Subleased Premises, the Security Deposit less any sums due and owing
to Sublandlord.

     4.   Use:

     Subtenant shall use the Subleased Premises only for those purposes
permitted in the Master Lease, unless Sublandlord and Lessor consent in writing
to other uses prior to the commencement thereof.

     5.   Sublease Term:

          5.1  Sublease Term: The Sublease Term shall be for the period
               -------------
commencing September 1, 1999 ("Commencement Date") and continuing through August
14 31, 2001, or such earlier date as the Master Lease or this Sublease may be
terminated in accordance with its terms ("Sublease Termination Date"). In no
event shall the Sublease Term extend beyond the Term of the Master Lease.

          5.2  Inability to Deliver Possession: Subtenant shall be entitled to
               -------------------------------
early occupancy of the Subleased Premises as of August 20, 1999 ("Early
Occupation Date").  Subtenant shall not be obligated to pay Rent for early
occupancy, but otherwise the early occupancy shall be on the terms

                                       2
<PAGE>

and conditions of this Sublease and Subtenant's obligation to pay Rent shall
commence on the Commencement Date.  In the event Sublandlord is unable to
deliver possession of the Subleased Premises at the Early Occupation Date,
Sublandlord shall not be liable for any damage caused thereby, nor shall this
Sublease be void or voidable but Subtenant shall not be liable for Rent on or
after the Commencement Date until such time as Sublandlord offers to deliver
possession of the Subleased Premises to Subtenant. The Sublease Term shall not
be extended by such delay. If Subtenant, with Sublandlord's consent, takes
possession prior to commencement of the Sublease Term, Subtenant shall do so
subject to all the covenants and conditions hereof and shall pay Rent for the
period ending with the commencement of the Sublease Term at the same rental as
that prescribed for the first month of the Sublease Term prorated at the rate of
1/30/th/ thereof per day. In the event Sublandlord has been unable to deliver
possession of the Subleased Premises within thirty (30) days from the
Commencement Date, Subtenant, at Subtenant's option, may terminate this Sublease
by written notice to Sublandlord prior to delivery of the Subleased Premises.

          5.3  Right of First Offer: Subtenant shall have no right to remian in
               --------------------
the Subleased Premises at any time after the Sublease Termination Date. In the
event that prior to the Sublease Termination Date Sublandlord elects in its sole
discretion to sublease the Subleased Premises for any period that commences on
or after the day following the Sublease Termination Date, Sublandlord shall so
notify Subtenant in writing and shall offer to continue to sublease the
Subleased Premises to Subtenant for a fair market rental determined by
Sublandlord in its sole discretion exercised in good faith for such period as
Sublandlord may elect in its sole discretion and otherwise on terms
substantially the same as those contained in this Sublease. Subtenant shall have
fifteen (15) days in which to accept Sublandlord's offer and enter into a new
sublease agreement or extension of this Sublease. If Subtenant fails to do so,
this right of first offer shall be of no further force or effect, Subtenant
shall have no further rights hereunder, and Sublandlord shall have the right to
sublease the Subleased Premises to such persons and on such terms (subject to
the Master Lease) as Sublandlord may elect in its sole discretion.

     6.   Operating Expenses:

     This is a Full Service Sublease and Sublandlord shall pay all direct
operating expenses of the Subleased Premises and expense pass throughs for the
property as may be provided for in the Master Lease.  Except as expressly
provided herein, Sublandlord shall provide all standard utility services (except
telephone usage), all of the telephone and data communication equipment listed
in the Inventory of Communications Equipment (attached hereto as Exhibit B) and
                                                                 ---------
janitorial services (as described in the attached Exhibit D) to the Subleased
                                                  ---------
Premises. Subtenant acknowledges that the Building provides HVAC from 6:00 a.m.
to 10:00 p.m., Monday through Friday, and 6:00 a.m. to 5:00 p.m. on Saturdays
and Sundays. If Subtenant desires after-hours HVAC service, Sublandlord and
Subtenant shall make an arrangement so that Subtenant may procure such after-
hours HVAC directly from the Lessor, all at Subtenant's sole cost and expense.
If the Lessor invoices Sublandlord for Subtenant's after-hours HVAC usage,
Subtenant shall pay such amount directly to Sublandlord within ten (10) days
after receipt of invoice so that Sublandlord may timely pay Lessor without
advancing funds on Subtenant's behalf.

     7.   Personal Property:

                                       3
<PAGE>

     The furniture and fixtures provided by Sublandlord for Subtenant's use
during the term of this Sublease are listed on Exhibit C attached hereto and
                                               ---------
are collectively referred to as the "Personal Property".  Sublandlord shall
deliver such Personal Property to Subtenant in good condition and repair.  By
taking possession of the Subleased Premises, Subtenant shall be deemed to have
acknowledged and agreed that all Personal Property is present at the Subleased
Premises and is in good condition and repair.  On the Termination Date,
Subtenant shall return all of the Personal Property to Sublandlord in good
condition and repair, reasonable wear and tear and damage by fire, earthquake or
other casualty excepted.  Subtenant shall not modify or remove any of the
workstations or other Personal Property without Sublandlord's consent.

     8.   Security and Telephones:

     Sublandlord shall have absolutely no responsibility or liability with
respect to the security of the Subleased Premises.  Without limiting the
generality of the foregoing: (a) with respect to the card-key system,
Sublandlord shall leave the existing card-key system in place, and upon
Subtenant's request, Sublandlord shall provide card-keys to Subtenant and shall
program the card-key system to limit access to the Subleased Premises to
Subtenant's employees; (b) Subtenant may perform whatever rekeying it may elect,
all at its sole risk and cost, and Subtenant shall ensure that Sublandlord has
operative keys to all areas of the Subleased Premises at all times; and (c) the
fire alarm and burglar alarm systems shall be left in place for Subtenant's use
if Subtenant so elects, but without any Sublandlord representation, warranty or
other duty to Subtenant with respect thereto. Sublandlord shall provide
reasonable access to Sublandlord's existing telephone and voice mail systems (as
described in Exhibit B) for the use of Subtenant and Subtenant's employees in
the conduct of their business, but all telephone service shall be the sole
responsibility of Subtenant.

     9.   Sublandlord's Right to Enter Upon the Subleased Premises:

     In accordance with paragraph 19 of the Master Lease, Subtenant shall permit
Sublandlord and Sublandlord's Agents to enter the Subleased Premises at all
reasonable times with reasonable notice except for emergencies in which case no
notice shall be required.

     10.  Indemnity:

     Except for claims arising from the gross negligence or willful misconduct
of Sublandlord (against which Sublandlord shall indemnify and hold Subtenant
harmless), Subtenant shall indemnify, defend and hold Sublandlord harmless from
and against any and all claims, damages, losses, liabilities and costs
(including without limitation reasonable attorneys' fees, costs and
disbursements) relating in any manner, directly or indirectly, in whole or in
part, to: (a) any failure by Subtenant to timely and properly perform each of
its obligations under this Sublease; (b) any accident occurring or other
circumstance existing on or about the Subleased Premises at any time during the
period between the Early Occupation Date or Sublease Commencement Date,
whichever is earlier, and the Termination Date (and any holdover period) due to
any cause whatsoever; and (c) any negligence or willful misconduct on the part
of Subtenant or any of its officers, directors, employees, guests, invitees,
agents or contractors. Subtenant shall promptly assume its defense and
indemnification obligations upon written notice from Sublandlord. Subtenant
shall not settle any

                                       4
<PAGE>

claim without the consent of Sublandlord if Sublandlord would incur any
liability for such claim under or following such a settlement, which consent
shall not be unreasonably withheld.

     11.  Condition of the Subleased Premises:

     The Subleased Premises shall be delivered in their "AS IS" condition.
Sublandlord shall have no obligation to make any capital improvements, repairs
or alterations to the Subleased Premises.  By taking possession of the Subleased
Premises, Subtenant shall be deemed to have accepted the Subleased Premises in
its condition on the date of delivery of possession.  Subtenant acknowledges
that neither Sublandlord nor any agent of Sublandlord has made any
representation or warranty with respect to the condition of the Subleased
Premises, the parking and common areas surrounding the Subleased Premises, or
with respect to the suitability of same for the conduct of Subtenant's business.
Subtenant further acknowledges that Sublandlord shall have no obligation to
construct or complete any additional alterations or improvements within or about
the Subleased Premises.  Subtenant shall not alter or improve the Subleased
Premises without the consent of Sublandlord and Lessor, to the extent required
under the Master Lease.  Notwithstanding the foregoing, to Sublandlord's actual
knowledge, the existing electrical and data communications equipment and
associated wiring in the Subleased Premises is in good working condition and
repair.

     12.  Sublandlord's Representations and Warranties:

     Sublandlord represents and warrants to Subtenant that: (a) there are no
amendments to the Master Lease other than the First Amendment To Lease dated
October 1, 1997; (b) to Sublandlord's actual knowledge, neither Sublandlord nor
Lessor is in default under the Master Lease; and (c) to Sublandlord's actual
knowledge, there is no claim or threatened claim by Lessor that Sublandlord is
in default under the Master Lease.

     13.  Notices:

     All notices, demands, consents and approvals which may or are required to
be given by either party to the other hereunder shall be given in the manner
provided in the Master Lease, at the addresses shown on the signature page
hereof. Sublandlord shall notify Subtenant of any default under the Master
Lease, or of any other event of which Sublandlord has actual knowledge which
will impair Subtenant's ability to conduct its normal business at the Subleased
Premises, as soon as reasonably practicable following Sublandlord's receipt of
notice from the Landlord of a default or actual knowledge of such impairment. If
Sublandlord elects to terminate the Master Lease, Sublandlord shall so notify
Subtenant by giving at least thirty (30) days notice prior to the effective date
of such termination pursuant to paragraph 23 thereof.

     14.  Broker Fee:

     Each party represents and warrants to the other that it has not had any
contract or dealings regarding the Property, or any communication in connection
with the subject matter of this transaction, through any licensed real estate
broker or other person who can claim a commission or finder's fee. In the event
that any broker or finder asserts a claim for a commission or finder's fee based
upon any contract, dealing or communications with either party, such party shall
indemnify, defend and hold the other party harmless from all costs and expenses
(including without limitation reasonable attorneys' fees and costs of defense at
the trial and appellate levels) incurred in

                                       5
<PAGE>

connection with such claim.  The provisions of this section shall survive any
termination of this Sublease.

     15.  Subtenant Improvements/Compliance With Americans With
Disabilities Act:

     Subtenant shall be responsible for the installation and cost of any and all
improvements, alterations or other work required on or to the Subleased Premises
or to any other portion of the property and/or building of which the Subleased
Premises are a part, required or reasonably necessary because of: (1)
Subtenant's use of the Subleased Premises or any portion thereof; or (2) the use
by a subtenant by reason of assignment or sublease. Compliance with the
provisions of this Section 13 shall be a condition of Sublandlord granting its
consent to any assignment or sublease of all or a portion of this Sublease and
the Subleased Premises described in this Sublease. Sublandlord shall be
responsible for the installation and cost of any and all improvements,
alterations or other work required on or to the Subleased Premises or to any
other portion of the property and/or building of which the Subleased Premises
are a part, required or reasonably necessary under the Americans With
Disabilities Act of 1990.

     16.  Toxic Contamination Disclosure:

     Sublandlord and Subtenant each acknowledge that they have been advised that
numerous federal, state, and/or local laws, ordinances and regulations ("Laws")
affect the existence and removal, storage, disposal, leakage of and
contamination by materials designated as hazardous or toxic ("Toxics"). Many
materials, some utilized in everyday business activities and property
maintenance, are designated as hazardous or toxic.

     Some of the Laws require that Toxics be removed or cleaned up by
landowners, future landowners or former landowners without regard to whether the
party required to pay for "clean up" caused the contamination, owned the
property at the time the contamination occurred or even knew about the
contamination. Some items, such as asbestos or PCBs, which were legal when
installed, now are classified as Toxics, and are subject to removal
requirements. Civil lawsuits for damages resulting from Toxics may be filed by
third parties in certain circumstances.

     Sublandlord and Subtenant each acknowledge that Sublandlord has made no
representations or warranties with respect to environmental assessment or
physical condition of the Subleased Premises, including, but not limited to,
matters relating to: (i) problems which may be posed by the presence or disposal
of hazardous or toxic substances on or from the Subleased Premises, (ii)
problems which may be posed by the Subleased Premises being within the Special
Studies Zone as designated under the Alquist-Priolo Special Studies Zone Act
(Earthquake Zones), Section 2621-2630, inclusive of the California Public
Resources Code, and (iii) problems which may be posed by the Subleased Premises
being within a HUD Flood Zone as set forth in the U.S. Department of Housing and
Urban Development "Special Flood Zone Area Maps," as applicable.

     independent investigation or determination of the physical or environmental
condition of the Subleased Premises, including, but not limited to, the
existence or nonexistence of any underground tanks, sumps, piping, toxic or
hazardous substances on the Subleased Premises. Subtenant agrees that it will
rely solely upon its own investigation and/or the investigation of professionals
retained by it.

                                       6
<PAGE>

     17.  Rent Abatement and Damages to Personal Property:

     In the event Sublandlord, pursuant to the terms of the Master Lease, is
entitled to and receives rent abatement, then to the extent such rent abatement
affects the Subleased Premises, Subtenant shall be entitled to a corresponding
rent abatement in an amount that the net rentable area of the Subleased Premises
bears to the total net rentable area of the Master Lease, and only to the extent
any such abatement applies to the Sublease Term. In addition, any amounts paid
or credited to Sublandlord under the terms of the Master Lease for damage to
Subtenant's personal property shall be credited to Subtenant, subject to the
same limitations set forth above.

     18.  Sign Rights:

     Subtenant shall be permitted to place its sign on the exterior of the
Subleased Premises in accordance with paragraph 20 of the Master Lease.
Sublandlord shall remove its signage within fifteen (15) days after the Sublease
Commencement Date.

     19.  Entire Agreement:

     This Sublease and the Exhibits attached hereto set forth the entire
agreement between the parties with respect to the Sublease of the Subleased
Premises. Except as specifically set forth herein, there are no agreements,
representations, or warranties whatsoever between the parties as to any matter.
Any prior agreements, conversations, or writings, are merged herein, superseded
hereby and extinguished.

     Exhibits to be attached include:

     Exhibit A  -   Floor plan showing the improvements to the Premises
     ---------

     Exhibit B  -  Inventory of Communications Equipment supplied by Sublandlord
     ---------

     Exhibit C  -  Inventory list of all furniture, fixtures and other
     ---------
                   equipment supplied by Sublandlord

     Exhibit D  -  Janitorial services specification or copy of Sublandlord's
     ---------
                   current janitorial services agreement

Sublandlord:  EXCITE, INC.                   Address:  555 Broadway
                                                       Redwood City, CA 94063

By          /s/ Elizabeth M. Berez           Date:     8/6/99
   ------------------------------------            -----------------------------
Subtenant:  TIOGA SYSTEMS, INC., a           Address:  1816 Embarcadero Road
            Delaware corporation                             Palo Alto, CA 94303

By          /s/ Mark Vranesh                 Date:     8/6/99
   ------------------------------------            -----------------------------

                                       7
<PAGE>

                              CONSENT TO SUBLEASE
                              -------------------

DATE:                  ___________________ 1999

RE: BUILDING:          MidPoint Technology Park, 575 Broadway, Redwood City, CA

SUBLET PREMISES:       Approximately 23,216 rentable square feet

DATE OF MASTER LEASE:  Lease dated March 14, 1997, ("Master Lease")

MASTER LESSOR:         Martin/Campus Associates, L.P., a Delaware limited
                        partnership

MASTER TENANT:         Excite, Inc., a Delaware corporation

SUBTENANT:             Tioga Systems, Inc., a Delaware corporation

TERM OF SUBLETTING:    August 15, 1999 through August 14, 2001

Mr.  Robert Hood
Excite, Inc.

Dear Mr.  Hood:

     Pursuant to the terms of the Master Lease covering the above-captioned
premises ("Sublet Premises"), Excite has requested Landlord's consent to your
subletting the Sublet Premises to the above-referenced Subtenant, hereinafter
referred to as the "Sublease."

     Landlord hereby grants consent to such Subletting upon the following
express terms and conditions:

     Such subletting is subject and subordinate to the Master Lease and to all
of its terms, covenants, conditions, provisions and agreements.

     1.   The Subtenant shall perform faithfully and be bound by all of the
applicable terms, covenants, conditions, provisions and agreements of the Master
Lease, for the period of such subletting and to the extent of the Sublet
Premises.

     2.   Neither such subletting nor this consent thereto shall:

          (a)  release or discharge you from any liability, whether past,
present or future, under the Master Lease;

          (b)  operate as a consent or approval by us to or of any of the terms,
covenants, conditions, provisions or agreements of the Sublease and we shall not
be bound thereby;
<PAGE>

          (c)  be construed to modify, waive or affect any of the terms,
covenants, conditions provisions or agreements of the Master Lease, or to waive
any breach thereof, or any of our rights as Landlord thereunder; or to enlarge
or increase our obligations as Landlord thereunder, or

          (d)  be construed as a consent by us to any further subletting either
by you or by the Subtenant or to any assignment by you of the Master Lease or
assignment by the Subtenant of the Sublease, whether or not the Sublease
purports to permit the same and, without limiting the generality of the
foregoing, both you and the Subtenant agree that the Subtenant has no right
whatsoever to assign, mortgage or encumber the Sublease nor to sublet any
portion of the Sublet Premises or permit any portion of the Sublet Premises to
be used or occupied by any other party; in connection herewith, both you and the
Subtenant agree that an assignment by operation of law or a transfer of control
of Subtenant (including but not limited to transfer of the controlling interest
of the stock of Subtenant, if Subtenant is a corporation) shall be deemed to be
a prohibited assignment hereunder, subject to our consent.

     4.   You shall not be released from any liability under the Master Lease
because of our failure to give notice of default under or in respect of any of
the terms, covenants, conditions, provisions or agreements of the Master Lease.

     5.   In the event of your default under the provisions of the Master Lease,
the rent due from the Subtenant under the Sublease shall be deemed assigned to
us and we shall have the right, under such default, at any time at our option,
to give notice of such assignment to the Subtenant and to demand that Subtenant
pay the rent and any other charges due under the Sublease directly to us. We
shall credit you with any rent received by us under such assignment but the
acceptance of any payment on account of rent from the Subtenant as the result of
any such default shall in no manner whatsoever be deemed an attornment by the
Subtenant to us, or serve to release you from liability under the terms,
covenants, conditions and provisions of agreements under the Master Lease.
Notwithstanding the foregoing, any other payment of rent from the Subtenant
directly to us, regardless of the circumstances or reasons therefor, shall in no
manner whatsoever be deemed an attornment by the Subtenant to us in the absence
of a specific written agreement signed by us to such an effect.

     6.   Both you and the Subtenant shall be and continue to be liable for the
payment of all bills rendered by us for charges incurred by the Subtenant for
services and materials supplied to the Sublet Premises.

     7.   The term of the Sublease shall expire and come to an end on its
natural expiration date or any premature termination date thereof or
concurrently with any premature termination or expiration of the Master Lease
(whether by consent or other right, now or hereafter agreed to by Landlord or
Tenant under the Master Lease, or by operation of law or at Landlord's option in
the event of default by tenant under the Master Lease).

     8.   This consent is not assignable, nor shall this consent be deemed a
consent to any amendment, modification, extension or renewal of the Sublease,
without our prior written consent.
<PAGE>

     9.   You and the Subtenant covenant and agree that under no circumstances
shall we be liable for any brokerage commission or other charge or expense in
connection with the Sublease and you both agree to indemnify us against same and
against any cost or expense (including but not limited to counsel fees) incurred
by us in resisting any claim for any such brokerage commission.

     10.  Notwithstanding any provision of the Sublease or this Consent to the
contrary, the Subtenant agrees that Master Landlord shall not be: (i) liable for
any act or omission of the Master Tenant as Sublessor under the Sublease; (ii)
subject to any offsets or defenses which the Subtenant may have against the
Master Tenant as Sublessor; (iii) bound by any payment of rent or other sums
made by the Subtenant for any advance period under the Sublease; (iv) bound by
any security deposits which the Subtenant might have paid to the Master Tenant
as Sublessor or any other party, or (v) bound by any amendment or modification
of the Sublease made without Master Landlord's prior written consent, which may
be withheld in the sole and absolute discretion of Master Landlord.

     11.  This Consent shall not be effective until executed by all the parties
hereto.

     12.  Concurrent with the execution of this Consent, Master Tenant shall pay
to Master Landlord an amount equal to $300.00, representing Master Landlord's
attorney fees and costs incurred in connection with the review of the Sublease
and the preparation of this Consent.

     13.  Master Landlord shall be named as an additional insured under all
liability insurance required to be carried by the Subtenant pursuant to the
Sublease, and Master Tenant shall furnish Master Landlord with a certificate of
insurance before the commencement of the term of the Sublease.

     14.  Master Landlord hereby waives all rights under paragraph 15.D of the
Lease during the term of the Sublease, including the ability to collect fifty
percent (50%) of any excess of the Subrent over the Rent payable pursuant to the
Lease and caused by this Consent to Sublease.

                         [SIGNATURES FOLLOW THIS PAGE]
<PAGE>

     The execution of a copy of this Consent by you (as Master Tenant) and by
the Subtenant shall indicate your joint and several confirmation of the
foregoing conditions and of your agreement to be bound thereby and shall
constitute Subtenant's acknowledgment that it has received a copy of the Master
Lease from you.

MASTER LESSOR:
Martin/Campus Associates., a Delaware limited partnership

By:  Martin/Redwood Associates, L.P., a California limited partnership
     Its: General Partner

     By:  The Martin Group of Companies, Inc., a California corporation
          Its: General Partner

          By: _____________________________________________
          Name: ___________________________________________
          Title: __________________________________________
          Date: ___________________________________________

MASTER TENANT:
Excite, Inc., a Delaware corporation

          By:    /s/ Elizabeth M. Berez
                 ------------------------------------------
          Name:  Elizabeth M. Berez
                 ------------------------------------------
          Title: VP, Finance
                 ------------------------------------------
          Date:  August 6, 1999
                 ------------------------------------------

SUBTENANT:
Tioga Systems, Inc., a Delaware corporation

          By:    /s/ Mark Vranesh
                 ------------------------------------------
          Name:  Mark Vranesh
                 ------------------------------------------
          Title: Dir Fin/Corp. Sec
                 ------------------------------------------
          Date:  8/6/99
                 ------------------------------------------<PAGE>

                                                                   EXHIBIT 10.15

CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTIONS OF THIS DOCUMENT HAVE
BEEN REDACTED AND HAVE BEEN SEPARATELY FILED WITH THE COMMISSION.

                           BEAR STEARNS & CO. INC.
                         ENTERPRISE LICENSE AGREEMENT

This Enterprise License Agreement ("Agreement") is dated this 27th day of May,
1999, by and between Bear Stearns & Co. Inc. ("Bear Stearns"), a Delaware
corporation, having offices at 245 Park Avenue New York, NY 10167, and  Tioga
Systems, Inc., ("Tioga"), having offices at 1816 Embarcadero Road, Palo Alto, CA
94303.

Section 1:  GRANT OF LICENSE

1.1  Tioga hereby grants to Bear Stearns, and Bear Stearns hereby accepts, a
     nonexclusive, nontransferable, perpetual license to install and use the
     Licensed Materials described on the Exhibit A. Bear Stearns may however
     assign this agreement to a successor in interest through merger or
     acquisition, to a parent or subsidiary, or to a purchaser of all or
     substantially all of the assets of the division that is to use the Licensed
     Material(s).  Any assignment of Bear Stearns's interest, other than as
     described herein is prohibited without prior written consent of Tioga.

1.2  Bear Stearns is authorized to use the Licensed Materials on the number of
     network computers, workstations and servers specified on Exhibit A for Bear
     Stearns's own internal business purposes.  Bear Stearns will not otherwise
     copy or reproduce the Licensed Materials; except for disaster recovery,
     back-up, archival or test purposes.  Bear Stearns may use the Licensed
     Materials at other than the specified site at no charge and without penalty
     in the following circumstances:  (i) if the specified site cannot be used
     because equipment or software is inoperable; however, Bear Stearns shall
     notify Tioga within five (5) business days after such relocation or, (ii)
     if use of the Licensed Materials is only for testing purposes.

1.3  Bear Stearns shall not, directly or indirectly, nor shall Bear Stearns
     permit others to: copy, duplicate or furnish to others any physical,
     magnetic or optical version of the Licensed Materials provided by Tioga;
     remove any copyright or other notice contained or included in the Licensed
     Materials or any material provided by Tioga; or change, modify, reverse
     engineer, decompile, disassemble or create derivative works from the
     Licensed Materials or any other material provided by Tioga: provide, lease,
     lend, use for timesharing, service bureau or hosting purposes or otherwise
     use or allow others to use the Licensed Materials to or for the benefit of
     third parties, modify, or, except to the extent expressly authorized
     herein, incorporate into or with other software or create a derivative work
     of any part of the License Materials, disseminate information or analysis
     (including, without limitation, benchmarks) regarding the quality or
     performance of the Licensed Materials from any source, and: use the output
     or other information generated by the Licensed Materials (including,
     without limitation, output describing the structure of a software program)
     for any purpose other than use by the Licensed Materials in accordance with
     its specifications.  Notwithstanding anything else, Tioga retains all title
     to, and, except as expressly licensed herein, all rights to the Licensed
     Materials, all copies thereof and all related documentation and materials.
     Bear Stearns must reproduce and include the copyright notice and other
     proprietary notices that appear on the original Licensed Materials on any
     copies and any media thereof made in accordance with the terms of this
     Agreement.

1.4  More than one Exhibit A may be incorporated into this Agreement and each
     Exhibit A together with the terms and conditions of this Agreement shall
     constitute a separate Agreement which is independent from other Exhibit A
     as incorporated into this Agreement. Subsidiaries and affiliates of Bear
     Stearns shall have the right to incorporate Exhibit A under this Agreement
     provided the terms and conditions of the Agreement are strictly adhered to.

Section 2:  CHARGES, FEES, PAYMENT AND INVOICING

2.1  License fees and service fees under this Agreement are specified on the
     Exhibit B. The prices and charges hereunder do not include any amount
     for taxes or duties.  If any duty, sales, use, excise, or other tax,
     penalties or interest, except for taxes based upon Tioga's net income,
     is, or should ultimately be, assessed against or is required to be
     collected by Tioga or by any taxing authority in connection with their
     performance required hereunder, Bear Stearns agrees to pay an amount
     equal to any and all such charges, except where Bear Stearns is exempt
     by law and Bear Stearns provides a bonafide exemption certificate to
     Tioga.
<PAGE>

2.2  Bear Stearns shall make all payments hereunder to Tioga, in accordance with
     instructions on the invoice which includes a due date of 30 days from the
     receipt of a proper and correct invoice. Any late payments under this
     Agreement shall be subject to a service charge amount equal to 1.5% of the
     amount due (calculated on a monthly basis) or the maximum amount allowed by
     law, whichever is less.

Section 3:  DELIVERY AND INSTALLATION

3.1  Tioga shall deliver to Bear Stearns, the Licensed Materials within ten (10)
     business days from the execution of this Agreement or at a different date
     if agreed to by both parties. Accompanying the Licensed Materials will be
     one (1) copy of the related Documentation regularly furnished by Tioga.

3.2  Tioga shall provide the amount of training, instruction and consultation
     prepaid as set forth in Exhibit B at Tioga's the current rates for such
     services, when requested by Bear Stearns. Such services are to be used at a
     time to be mutually agreed upon by the parties and Bear Stearns shall, in
     addition to the amount set forth in Exhibit B, reimburse Tioga for all
     reasonable out-of-pocket expenses, including all transportation, lodging,
     meals and other expenditures related to providing such services.

Section 4:  SUPPORT AND MAINTENANCE

4.1  Support. During the one year period extending from the Effective Date (the
     -------
     "Support Period"), and provided Bear Stearns has paid the applicable annual
     support and maintenance fee set forth in Exhibit B, Tioga shall provide
     support and maintenance described in Exhibit C. Any patches, updates, etc.
     provided as part of Maintenance shall be included within the definition of
     the Licenses Materials for the purpose of this Agreement.

4.2  Renewals. Tioga's obligation to provide the above-described support and
     --------
     maintenance and Bear Stearns' obligation to pay the then-current applicable
     annual support and maintenance fee shall renew automatically upon each
     anniversary of the Effective Date (or such other consolidated Licensed
     Materials purchase date agreed to by the parties in writing), unless either
     Bear Stearns or Tioga has given the other party prior written notice of
     cancellation at least thirty (30) days prior to the expiration of the then
     current term. If Bear Stearns elects not to renew support and maintenance
     for successive terms, Bear Stearns may reenroll only upon payment of the
     applicable annual fee which would have been paid had Bear Stearns not
     terminated support and maintenance.

4.3  Training. Upon Bear Stearns' request, Tioga will provide training to Bear
     --------
     Stearns in accordance with Tioga's then current training offerings and at
     Tioga's then current prices at mutually agreed upon times and locations.
     Tioga's current training offerings and their associated prices are set
     forth in Exhibit D. In the event training services are provided at
     locations other than at Tioga's premises, Bear Stearns shall be responsible
     for all reasonable travel, meals, hotel and other associated expenses
     related to providing such training services. If training services are
     listed in Exhibit B, Bear Stearns agrees to pay Tioga for such training
     services in accordance with the terms of this Agreement.

4.4  Deployment and Implementation Services.  Bear Stearns shall be responsible
     --------------------------------------
     for deployment and implementation of the Licenses Materials. Bear Stearns,
     at its option, may elect to have Tioga provide deployment and
     implementation services at Tioga's then current rates for such services.
     In the event provision of deployment and implementation services requires
     Tioga's employees to travel to Bear Stearns's location or other locations,
     Bear Stearns shall be responsible for all reasonable travel, meals, hotel
     and other associated expenses related to providing such deployment and
     implementation services.  In the event any work product or code is created
     in the provision of Deployment and Implementation services, such work
     product or code shall be included within Licensed Materials and licensed to
     Bear Stearns under the terms and conditions of this Agreement, and Tioga
     shall retain all right, title and interest in and to such work product or
     code and any derivatives, enhancements or modifications to the Licensed
     Materials created by Tioga.   If deployment and implementation services are
     listed in Exhibit B, Bear Stearns agrees to pay Tioga for such deployment
     and implementation services in accordance with the terms of this Agreement.
<PAGE>

Section 5:  WARRANTIES

5.1  Tioga warrants to Bear Stearns that for a period of sixty (60) days from
     the Effective Date, the Licensed Materials will achieve the functionality
     described in the Documentation. Tioga does not warrant, however that Bear
     Stearns use of the Licensed Materials will be uninterrupted or that the
     operation of the Licenses Materials will be error-free. Tioga also warrants
     that the media containing the Licensed Materials, if any, is free from
     defects in material and workmanship and will so remain for ninety (90) days
     from the date Bear Stearns acquired the Licensed Materials. Tioga's sole
     liability (and Bear Stearns exclusive remedy) for any breach of this
     warranty shall be, in Tioga's sole discretion, the use of commercially
     reasonable efforts: (i) to replace Bear Stearns' media or Licensed
     Materials; or (ii) to advise Bear Stearns how to achieve the same
     functionality with the Licensed Materials as described in the Documentation
     through a procedure different from that set forth in the Documentation; or
     (iii) if the above remedies are impracticable, to refund the license fee
     paid for the Licensed Materials and terminate this Agreement. Tioga shall
     have no obligation with respect to a warranty claim unless notified of such
     claim and provided evidence of the license purchase within the applicable
     warranty period. Tioga will use reasonable commercial efforts to repair,
     replace, advise or refund pursuant to the foregoing warranty within thirty
     (30) days of being so notified.

5.2  Tioga warrants the Licensed Materials are free from computer viruses
     introduced as a result of the gross negligence or intentional acts of
     Tioga, its agents or employees and that Tioga, its agents or employees will
     not embed any device in the Licensed Materials or take any action to
     disrupt or terminate its operation of such Licensed Materials.

5.3  Tioga further warrants that it is the sole owner of, or that it has the
     right to license the use of, the Licensed Materials being used for Bear
     Stearns's purposes, and that it has the right to provide Bear Stearns with
     a nonexclusive license for the use of those Licensed Materials.

5.4  The Licensed Materials (i) is designed to be used prior to, during, and
     after the calendar year 2000 A.D.; (ii) will operate during each such time
     period without any error or interruption relating to, or the product of,
     data or input which includes an indication of or reference to a date ("Date
     Data") which represents or references different centuries or more than one
     century; (iii) will, under normal use and service, record, store, process
     and present calendar dates falling on or after September 9, 1999, January
     1, 2000 and February 29, 2000, in the same manner, and with the same
     functionality, data integrity and performance, as the Licensed Materials
     records, stores, processes and presents calendar dates on or before
     September 8, 1999, December 1, 1999 and February 29, 1996; and (iv)
     recognizes the year 2000 as a leap year.

5.5  EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, LICENSOR EXPRESSLY
     DISCLAIMS ANY AND ALL WARRANTIES CONCERNING THE LICENSED MATERIALS OR THE
     SERVICES TO BE RENDERED HEREUNDER, WHETHER EXPRESS OR IMPLIED, INCLUDING
     (WITHOUT LIMITATION) ANY WARRANTY OF NON INFRINGEMENT, MERCHANTABILITY OR
     FITNESS FOR A PARTICULAR PURPOSE.

Section 6:  LIMITATIONS OF LIABILITY

EXCEPT AS STATED HEREIN, NEITHER PARTY SHALL BE LIABLE FOR ANY SPECIAL,
INCIDENTAL, INDIRECT AND/OR CONSEQUENTIAL DAMAGES OF ANY KIND, RESULTING FROM
EITHER PARTY'S PERFORMANCE OR FAILURE TO PERFORM PURSUANT TO THE TERMS OF THIS
AGREEMENT OR ANY OF THE SCHEDULES OR ATTACHMENTS HERETO, OR RESULTING FROM THE
FURNISHING, PERFORMANCE OR USE OR LOSS OF ANY LICENSED PRODUCTS OR OTHER
MATERIALS DELIVERED TO BEAR STEARNS THEREUNDER, INCLUDING WITHOUT LIMITATION ANY
INTERRUPTION OF BUSINESS, WHETHER RESULTING FROM BREACH OF CONTRACT OR BREACH OF
WARRANTY, EVEN IF THE PARTIES HERETO HAVE BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

Tioga's liability to Bear Stearns under any provision of this Agreement shall be
limited to the amounts actually paid by Bear Stearns to Tioga pursuant to the
Exhibit A and/or subsequent Exhibit A hereto.  The existence of more than one
claim shall not enlarge or extend the limit.  Bear Stearns releases Tioga from
all obligations, liability, claims or demands related to the Licensed Materials
supplied by Tioga to Bear Stearns under this agreement in excess of the
limitation provided for in this section.
<PAGE>

The parties acknowledge that the limitations set forth in this section are
integral to the amount of fees charged for the license granted under this
Agreement and services provided in connection with the same, and recognize that
were Tioga to assume any further liability beyond that set forth in this
section, such fees would be substantially higher.

Section 7:  DISCLOSURE

7.1  The Licensed Materials and Documentation received by Bear Stearns from
     Tioga under this Agreement are and shall be treated as proprietary and
     confidential information of Tioga.  Any material or information relating to
     the business policies, procedures, customs and forms of Bear Stearns
     including information previously divulged or delivered to Tioga by Bear
     Stearns regarding the aforementioned subject matter and all information and
     data which are proprietary to a third party and which the Bear Stearns is
     obligated to treat as confidential obtained by Tioga or its officers,
     employees or agents, or disclosed to them in connection with the
     performance by Tioga of its obligations under this Agreement, is hereby
     designated as confidential and proprietary information of Bear Stearns.
     The obligations of confidentiality contained in this Section 7 shall not
     apply to information which: (i) is known to a party at the time of
     disclosure as proven by written records of the receiving party; (ii) is
     independently received by a party without obligations of confidentiality
     from a third party which has the legal right to give such information; or
     (iii) is generally known to third parties through no fault or action of the
     receiving party.

7.2  The parties agree not to use or copy the other's confidential information
     unless such use or copying is approved by, and for the benefit of, the
     other party.

7.3  Using the Licensed Material and Documentation or any part of the data
     therein in original or remanipulated form for the purpose of creating any
     form of list, directory, reporting service whether for internal use or
     release to persons outside the Bear Stearns organization, is expressly
     prohibited.

7.4  Each party hereto will take all reasonable steps to assure that the
     confidential information of the other party shall not be disclosed by them
     to others, in whole or in part, without the prior written permission of the
     other party.  Such prohibition on disclosures shall not apply to
     disclosures by Bear Stearns to its employees and agents, provided such
     disclosures are reasonably necessary to Bear Stearns's use of the Licensed
     Materials and provided further that Bear Stearns shall take all reasonable
     steps to insure that the Licensed Materials are not disclosed by such
     employees in contravention of this Agreement.

Section 8:  TITLE

     Tioga shall retain title to the Licensed Material and Documentation
     including all versions and embodiments thereof and all additions and
     modifications thereto.  Tioga does not by this Agreement convey any
     proprietary interest therein to  Bear Stearns.   Bear Stearns agrees that
     the Licensed Materials' Documentation and any derivative works thereof,
     including all changes made thereto by anyone and any materials related
     thereto that are supplied by or developed by Tioga, are the valuable
     property of Tioga. Bear Stearns further agrees to treat the Licensed
     Materials and related materials accordingly and agrees diligently to
     preclude all access to the Licensed Materials except as provided herein, to
     keep the same confidential, by using the same care and discretion that
     Bear Stearns uses with respect to its own confidential property.  Bear
     Stearns agrees to keep all property of Tioga free and clear of all claims,
     liens and encumbrances.

Section 9:  INDEMNIFICATION

     9.1  Tioga agrees to defend Bear Stearns and at Tioga's option, settle any
action or proceeding of any kind or description based upon a third party's claim
of copyright or trademark infringement asserted against Bear Stearns by such
third party based upon the use of the Licensed Materials by Bear Stearns,
provided: (i) the Licensed Materials are used as provided by Tioga; (ii) Tioga
shall have received from Bear Stearns notice of said claim within ten (10) days
of assertion thereof and, (iii) Tioga is given sole control to direct the
investigation, defense and settlement of each such claim. The foregoing
obligation of Tioga does not apply with respect to those portions of the
Licensed Materials (i) which are modified after shipment by any party other than
Tioga, if the alleged infringement relates to such modification, (ii) combined
with any non-Tioga products, processes or materials where the alleged
infringement relates to such combination, (iii) where the allegedly infringing
activity continues after Tioga has notified Licensee thereof or after Tioga has
informed Bear Stearns of modifications that would have avoided the alleged
infringement, (iv) where Bear Stearns' use of the Licensed Materials is incident
to an infringement not resulting primarily from the Licensed Materials, or (v)
infringement based on use of version other
<PAGE>

than the then current version of the Licensed Materials if such infringement
could have been avoided by use of the then current version.  Bear Stearns shall
cooperate fully with Tioga in connection with the foregoing.  If notified of
said claim within ten (10) days of assertion thereof brought against Bear
Stearns based on an allegation that Bear Stearns' use of the Licensed Materials
constitutes infringement, Tioga will pay  reasonable attorney fees, associated
with resolving such claim and any amounts finally awarded in settlement, if any,
provided that Tioga shall have sole control of the resolution of any such claim
and all negotiations for its settlement.  Any settlement made by Tioga under
this Section 9 shall not adversely affect Bear Stearns' ability to exercise the
license rights granted hereunder without Bear Stearns's prior written consent.

9.2  Should the Licensed Materials, become, or in Tioga's opinion are likely to
     become, the subject of a claim of infringement, Tioga shall have the right,
     at Tioga's option and expense, either: (i) to procure for the Bear Stearns
     the right to continue using the Licensed Materials; (ii) to replace or
     modify the same so that they become non-infringing; or, if after Tioga uses
     its commercially reasonable efforts  to accomplish (i) and (ii) and is
     unable to do so, then; (iii) to grant the Bear Stearns a refund of the
     unused portion of the license fees.

9.3  Both parties agree to indemnify, defend and hold harmless the other party,
     its employees, agents and/or authorized representatives for any actual
     damages, liabilities, costs and expenses, including reasonable attorneys
     fees, due to claims alleging damage to the other parties  property or
     injury or death to any persons, arising directly out of the other parties
     ', or the other parties employee's, agent's or subcontractor's negligence
     in performing the services contemplated under this Agreement.

Section 10:  TERMINATION

10.1 In the event a party hereto materially defaults in the performance of any
     of its duties or obligations hereunder, which default shall not be
     substantially cured within thirty (30) days after notice is given to the
     defaulting party specifying the default, then the party not in default may,
     by giving notice thereof to the defaulting party specifying the default,
     terminate this Agreement for cause.  Notwithstanding the foregoing, with
     respect to any such material default that cannot be reasonably cured within
     thirty (30) days, if the defaulting party in good faith promptly proceeds
     to commence curing said default and thereafter proceeds with all diligence
     substantially to cure the same, the defaulting party shall have up to
     another thirty (30) days (for a total of sixty (60) days) substantially to
     cure such default.  If such material default is not substantially cured
     prior to the end of the second thirty (30) days, the party not in default
     may, by giving notice thereof, terminate this Agreement for cause as of a
     date specified in such notice of termination.

10.2 This agreement shall expire in the event Bear Stearns does not have any
     active support services pursuant to Section 4 above.  Additionally, Either
     party hereto may have the right to terminate this Agreement and/or the
     license granted hereunder, in the event that the other party: (i)
     terminates or suspends its business, (ii) becomes subject to any bankruptcy
     or insolvency proceeding under Federal or state statute, (iii) becomes
     insolvent or becomes subject to direct control by a trustee, receiver or
     similar authority, (iv) has liquidated, voluntarily or otherwise, or (v)
     transfers, assigns or otherwise conveys control of itself, without the
     prior written consent of the other party hereto.

Section 11:  PUBLICITY

     Tioga agrees to submit to Bear Stearns all advertising, sales promotion and
     other publicity matter relating to this Agreement wherein Bear Stearns's
     name is mentioned or language is used from which the connection of Bear
     Stearns's name therewith may be inferred or implied; and Tioga further
     agrees not to publish or use such advertising, sales promotion, or
     publicity matter without the prior written consent of Bear Stearns.

Section 12:  MONITORING

     Tioga acknowledges that, as is the custom and practice in Bear Stearns's
     industry, from time to time Bear Stearns monitors and/or records certain
     telephone lines and other communications devices going into or out of Bear
     Stearns's premises, and to the extent that any such monitoring and/or
     recording occurs relating to any telephone call and other communication
     going into or out of Bear Stearns's premises involving Tioga or any of its
     employees, agents and sub-contractors, then Tioga, on behalf of its self
     and its employees, agents and sub-contractors, consents thereto or will
     ensure such other party consents thereto.
<PAGE>

Section 13:  EXPORT RESTRICTIONS

     Bear Stearns understands and acknowledges that certain technology licensed
     hereunder may be subject to regulation by agencies of the U.S. government,
     including the U.S. Department of Commerce, which prohibit export or
     diversion of certain products and technology to certain countries. Bear
     Stearns warrants that it will comply in all respects with the export
     restrictions applicable to any materials or technology provided hereunder
     and will otherwise comply with the Export Administration Regulations or
     other United States laws and regulations in effect from time to time.

Section 14:  MISCELLANEOUS

14.1 Any waiver, amendment or modification of any provisions of this Agreement
     and/or any Exhibits and Attachments (if any) hereto shall not be effective
     unless made in writing and signed by both parties. No failure or delay by
     either party with respect to exercising any of its rights hereunder shall
     operate as a waiver thereof.

14.2 If any provision of this Agreement is declared or found to be invalid,
     illegal, unenforceable or void, then both parties shall be relieved of all
     obligations arising under such provision, but only to the extent that such
     provision is invalid, illegal, unenforceable or void, it being the intent
     and agreement of the parties that this Agreement shall be deemed amended by
     modifying such provision to the extent necessary to make it valid, legal
     and enforceable while preserving its intent or, if that is not possible, by
     substituting therefor another provision that is valid, legal and
     enforceable and achieves the same objective.  Each party agrees that it
     will perform its obligations hereunder in accordance with all applicable
     laws, rules and regulations now or hereafter in effect.

14.3 Headings are for reference purposes only.

14.4 Neither party shall be liable, or have recourse, in respect to any delay in
     delivery or failure to deliver the Licensed Materials or any other
     materials used in connection therewith provided by Tioga, or of the non-
     performance or delay in performance of any term or condition of this
     Agreement directly or indirectly resulting from any cause beyond the
     control of Tioga.  Such causes shall include, but not be limited to, acts
     of God, strikes, lockouts, riots, acts of war, epidemics, governmental
     regulations superimposed after the fact, fire, communication failures,
     power failures, earthquakes or other disasters.

14.5 Tioga may, upon advance notice of at least ten (10) business days, conduct
     and audit during regular business hours to verify compliance with the terms
     of this Agreement, which shall be conducted at Tioga's expense unless the
     results establish that inaccuracies from the audit have resulted in
     underpayment to Tioga of more than 10% of the amount actually due, in which
     case Bear Stearns shall pay all amount due and bear the expense of the
     audit.

14.6 Any notices required or permitted to be sent hereunder shall be served
     personally or by registered or certified mail, return receipt requested or
     by facsimile with confirmation of receipt; to the addresses stated below:

     Bear, Stearns & Co. Inc.                Tioga Systems, Inc.
     115 South Jefferson Road                1816 Embarcadero Road
     Whippany, NJ  07981                     Palo Alto, CA  94303
     Attn:  IS-Contracts & Acquisitions      Attn: Mark Vranesh

14.7 The laws of the State of New York shall govern and the parties consent and
     submit to the jurisdiction and venue of the State or Federal Courts located
     in New York.

14.8 Both parties acknowledges that it has read this Agreement, its Exhibits and
     Attachments (if any), understands it and agrees to be bound by its terms,
     and further agrees that it is the complete and exclusive statement of the
     Agreement, which supersedes and merges all prior proposals, understandings
     and all other agreements, oral and/or written, between the parties relating
     to this Agreement.  This Agreement may not be modified or altered except by
     a written instrument duly executed by both parties.
<PAGE>

IN WITNESS WHEREOF, the parties, by their duly authorized representatives, have
caused this Agreement to be duly executed and delivered as of the day and year
first above written.

Bear, Stearns & Co. Inc.                 Tioga Systems, Inc.
---------------------------------        -------------------------------------

       /s/ Geryl W. Darington                     /s/ Robert Amaral Jr.
---------------------------------        -------------------------------------
Signature                                Signature

       Geryl W. Darington                         Robert Amaral Jr.
---------------------------------        -------------------------------------
Print or Type Name                       Print or Type Name

       Senior Managing Director                   Vice-President of Sale
---------------------------------        -------------------------------------
Title  5/27/99                           Title  5-27-99
<PAGE>

                                   EXHIBIT A
                              LICENSED MATERIALS
                              ------------------

I.  Description and Specifications of Software:
-----------------------------------------------

Tioga Self-Healing System(TM) Version 1.2 in object code format.

II.  Number of Network Computers and Workstations Licensed
----------------------------------------------------------

Catalogue Number and Program Name        Number of Authorized Copies
---------------------------------        ---------------------------

11-00001  Tioga/Desktop Agent            See Scope Below
11-00002  Tioga/Mobile Agent             See Scope Below
11-00006  Server Agent                   See Scope Below
11-00011  Tioga/Administration and       One (1)
          Healing Console - Enterprise
          License

Scope: This is an Enterprise License deal with a term of three (3) years. Bear
Stearns may deploy any mixture of Desktop, Mobil, and/or Server agents as long
as the total number of authorized copies does not exceed [***] during the term
of the agreement. At the end of the three years, Bear Stearns will have a
perpetual right to use the number of licenses deployed during the term of this
agreement.

Bear, Stearns & Co. Inc.                 Tioga Systems, Inc.
---------------------------------        -------------------------------------

       /s/ Geryl W. Darington                     /s/ Robert Amaral Jr.
---------------------------------        -------------------------------------
Signature                                Signature

       Geryl W. Darington                         Robert Amaral Jr.
---------------------------------        -------------------------------------
Print or Type Name                       Print or Type Name

       Senior Managing Director                   Vice-President of Sale
---------------------------------        -------------------------------------
Title  5/27/99                           Title  5-27-99

[*]  CONFIDENTIAL MATERIAL REDACTED AND FILED SEPARATELY WITH THE COMMISSION.
<PAGE>

                                   EXHIBIT B
                        PAYMENT TERMS AND FEE SCHEDULE
                        ------------------------------

I.  Payment Terms:
------------------

The Fees described in VI. below will become due and payable upon the earlier to
occur of; (i) [***] by Bear Stearns of the initial rollout of the Company's
software on approximately [***] desktops at Bear Stearns whereby Tioga will
notify Bear Stearns in writing of the completion of the initial rollout and Bear
Stearns will have 10 business days to notify Tioga in writing of [***] of
the [***] or (ii) after [***] days from the Effective date. By mutual agreement,
both Companies may extend the [***] day [***] described in (ii) above.

II. Software License Fees
---------------------------

Item                                         Fees
----                                         ----
License Fees                                 $[***].
Licenses beyond the [***] limit may be purchased in blocks of [***] for a price
of $[***]/License.

III. Technical Support Fee Schedule
-----------------------------------

Item                                         Fees
----                                         ----
Standard Technical Support (Year 1)          $ [***]
Standard Technical Support (Year 2)          $ [***]
Standard Technical Support (Year 3 - [***]%) $ [***]

IV. Deployment and Implementation Fee Schedule
----------------------------------------------

V.  Training
------------

VI.  Payment of Fees
--------------------

All fees are due and payable net 30 days from receipt of invoice. Payments are
due according to the following schedule:
 .    $[***] due June 30, 1999.Includes- First installment payment on software
     license fees and payment of six months of product maintenance for 1999.
 .    $[***] due September 30, 1999. Second installment payment on software
     license fees and payment of second six-months product maintenance for the
     remainder of 1999 through May 2000.
 .    $[***] Maintenance  Fee due May 31, 2000
 .    $[***] Maintenance Fee due May 31, 2001
 .    Beginning May 31, 2002, Maintenance fee due annually in advance at a rate
     of [***]% of license fees billed to date (increased annually based on the
     percentage increase reflected in the CPI).

Bear, Stearns & Co. Inc.                 Tioga Systems, Inc.
---------------------------------        -------------------------------------

       /s/ Geryl W. Darington                     /s/ Robert Amaral Jr.
---------------------------------        -------------------------------------
Signature                                Signature

       Geryl W. Darington                         Robert Amaral Jr.
---------------------------------        -------------------------------------
Print or Type Name                       Print or Type Name

       Senior Managing Director                   Vice-President of Sale
---------------------------------        -------------------------------------
Title  5/27/99                           Title  5-27-99

[*]  CONFIDENTIAL MATERIAL REDACTED AND FILED SEPARATELY WITH THE COMMISSION.
<PAGE>

                                   EXHIBIT C
                                    SUPPORT
                                    -------

Standard Technical Support
--------------------------

Support Hours
     Tioga will provide support from 8AM to 6PM Pacific time, Monday through
     Friday
Response Time
     Tioga will respond to customer inquiries within 24 hours
Contact Methods
     Tioga will provide a 1-800 number support line
     Tioga will provide e-mail support
Contacts
     Customer is allowed one named contact per TAC (Tioga Administration
     Console) User License purchased
     Customer receives a reasonable amount of phone and e-mail support for those
     contacts

Software Maintenance for product purchased
     Customer will receive software patches and maintenance releases
     Customer will receive major releases that are generally made available by
     Tioga without charge

Product Information
     Customer will receive quarterly product information updates
<PAGE>

                                   EXHIBIT D
                                   TRAINING
                                   --------

Tioga Administrator Training
----------------------------

One day training course that includes the following:

Systems Administration Training
- Installation and configuration of Tioga Self-Healing System
- Configuration and administration of Tioga Servers
- Installation and configuration of Tioga Agents

HelpDesk Administration Training
- Tioga Self-Healing System Overview
- User issues and education
- Remote Diagnosis and Repair

Training to be provided at Bear Stearns facilities.

Fee Schedule
------------

See exhibit B.

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