Document:

<PAGE>

                                                                   Exhibit 10.22

                              EXCHANGE AGREEMENT

     This Agreement is entered into as of this 7th day of May, 2001, by and
among Optika  Inc., a Delaware corporation (the "Company"), with an address at
7450 Campus Drive, 2nd Floor, Colorado Springs, Colorado 80920, and those
holders of the Series A Preferred Stock of the Company ("Investors") set forth
in Schedule 1 attached hereto (the "Schedule of Investors").

                                    RECITALS

     A.    Each of the Investors has purchased shares of the Series A Preferred
Stock, $.001 par value per share, of the Company ("Series A Stock") issued
pursuant to that certain Stock Purchase Agreement (as defined below) and
warrants (the "Warrants") to purchase shares of common stock, $.001 par value
per share, of the Company (the "Common Stock") issued pursuant to that certain
Warrant Agreement by and among the Company and the Investors dated February 23,
2000, each in the amount set forth opposite each Investors name in the Schedule
of Investors.

     B.    The Company and the Investors have agreed to enter into this
Agreement whereby the Company will (i) issue to the Investors shares of the
Series A-1 Convertible Preferred Stock, $.001 par value per share, of the
Company ("Series A-1 Stock") having the terms and provisions set forth in the
Certificate of Designation attached hereto as Exhibit A (the "Certificate of
Designation"), in exchange for the shares of the Series A Stock owned by such
Investor, on a one-share for one-share basis and (ii) purchase from the
Investors the Warrants for an aggregate purchase price of $0.01 (collectively,
the "Transactions").

     NOW, THEREFORE, in consideration of the foregoing and the mutual promises
herein contained the parties agree as follows:

                                   AGREEMENT

                                   ARTICLE I

                                  DEFINITIONS

     The following definitions shall apply for purposes of this Agreement:

     "Amendment to Registration Rights Agreement" means the First Amendment to
Registration Rights Agreement in the form attached hereto as Exhibit B, which
amends the Registration Rights Agreement by and among the Company and the
Investors dated February 23, 2000.

     "Securities Purchase Agreement" means the Securities Purchase Agreement by
and among the Company and the Investors dated February 9, 2000.  All terms used
but not defined herein shall have the respective meanings accorded to those
terms in the Securities Purchase Agreement.

                                       1
<PAGE>

                                  ARTICLE II

                          EFFECTIVE DATE OF AGREEMENT

     This Agreement shall be effective as of May 7, 2001 or such later date as
an Investor executes and delivers this Agreement (the "Effective Date").

                                  ARTICLE III

                        EXCHANGE; PURCHASE OF SECURITIES

     Section 3.01. Exchange. As of the Effective Date, each Investor agrees to
exchange, surrender and cancel those shares of Series A Stock held by such
Investor as set forth in column 1 of the Schedule of Investors in exchange for
the issuance to such Investor of those shares of Series A-1 Stock set forth
opposite such Investor's name in column 2 of the Schedule of Investors. The
Series A-1 Stock issued to each investor in such exchange shall have those
rights, preferences and privileges set forth in the Certificate of Designation.

     Section 3.02. Cancellation and Issuance. Each Investor hereby directs the
Company to cancel the share certificates representing those shares of Series A
Stock held by such Investor immediately following the Effective Date.
Immediately following receipt by the Company of items set forth in Section
3.04(a), the Company shall issue to such Investor certificates representing that
number of shares of Series A-1 Stock as such Investor shall receive pursuant to
Section 3.01 above. Such share certificates shall bear the legend set forth in
Section 8.4 of the Securities Purchase Agreement.

     Section 3.03. Purchase. As of the Effective Date, each Investor agrees to
sell and transfer to the Company and the Company agrees to purchase from each
Investor, the Warrants held by such Investor as set forth in column 3 of the
Schedule of Investors in exchange for the consideration set forth opposite such
Investors name in column 4 of the Schedule of Investors.

     Section 3.04. Deliveries.

           (a)   On the Effective Date, subject to the terms of this Agreement,
     each Investor shall deliver to the Company:

                     (i)     an original stock certificate evidencing Investor's
           ownership of that number of shares of Series A Stock set forth
           opposite such Investor's name in column 1 of the Schedule of
           Investors;

                     (ii)    the original Warrant certificate evidencing
           Investor's right to purchase that number of shares of Common Stock
           set forth opposite such Investor's name in column 3 of the Schedule
           of Investors;

                     (iii)   the Amendment to Registration Rights Agreement duly
           executed by an authorized officer of Investor; and

                                       2
<PAGE>

                     (iv)    a copy of this Agreement duly executed by an
     authorized officer of Investor.

     (b)   On the Effective Date, subject to the terms of this Agreement, the
Company shall deliver to each Investor:

                     (i)     a certificate representing that number of shares of
     Series A-1 Stock set forth opposite such Investor's name in column 2 of the
     Schedule of Investors;

                     (ii)    a check in the amount set forth opposite such
     Investor's name in column 4 of the Schedule of Investors;

                     (iii)   a copy of the Certificate of Designation certified
     by the Delaware Secretary of State;

                     (iv)    the Amendment to Registration Rights Agreement duly
     executed by an authorized officer of the Company; and

                     (v)     a copy of this Agreement duly executed by an
     authorized officer of the Company.

                                  ARTICLE IV

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     Section 4.01. Organization. The Company is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware
and has the requisite corporate power and authority to carry on its business as
it is now being conducted.

     Section 4.02. Due Authorization. The Company has all right, corporate power
and authority to enter into this Agreement and each of the other documents set
forth in Section 3.04(b) (the "Transaction Documents") to which it is a party
and to consummate the Transactions. The execution and delivery by the Company of
this Agreement and the Transaction Documents, the exchange and issuance of the
Series A-1 Stock and the purchase of the Warrants by the Company and the
compliance by the Company with each of the provisions of this Agreement and each
of the Transaction Documents (including the reservation and issuance of the
shares of Common Stock on any conversion of the Series A-1 Stock and the
consummation by the Company of the Transactions) (a) are within the corporate
power and authority of the Company and (b) have been duly authorized by all
requisite corporate proceedings on the part of the Board of Directors and, if
applicable, the stockholders of the Company. This Agreement and the Transaction
Documents have been duly and validly executed and delivered by the Company, and
this Agreement and the Transaction Documents constitute a valid and binding
agreement of the Company, enforceable against the Company in accordance with
their terms, except as enforceability against the Company may be limited by
applicable bankruptcy, insolvency, reorganization, moratorium or similar laws
now or hereafter in effect relating to the rights of creditors generally and by
legal and equitable limitations on the enforceability of specific remedies
(regardless of whether enforcement is considered in a proceeding in equity or at
law). The shares of Series A-1 Stock and all Common Stock issuable

                                       3
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upon conversion of the Series A-1 Stock have been validly reserved for issuance,
and upon exchange of the Series A Stock (in the case of the Series A-1 Stock)
and upon conversion of the Series A-1 Stock (in the case of the Common Stock)
such shares of Series A-1 Stock and Common Stock, as the case may be, will be
duly and validly issued and outstanding, fully paid, and nonassessable and
issued free of preemptive rights.

     Section 4.03. Consents and Approvals; Non-Contravention. Neither the
execution, delivery or performance of this Agreement, nor the consummation by
the Company of the Transactions will (a) require any consent, approval or
authorization under any contract, lease or other agreement entered into by the
Company, (b) violate any order, writ, injunction, decree, statute, rule or
regulation applicable to the Company, or (c) result in a violation or breach of,
or constitute (with or without notice or lapse of time or both) a default (or
give rise to any right of termination, amendment, cancellation or acceleration
or any loss of a material benefit) under, or result in the creation or
imposition of (or the obligation to create or impose) any liens, claims,
mortgages, encumbrances, pledges, security interests, equities and charges of
any kind ("Liens") upon any of the Series A-1 Stock under any note, bond,
mortgage, indenture, lease, license, contract, agreement or other instrument or
obligation to which the Company is a party or by which the Company or any of its
properties or assets may be bound.

                                   ARTICLE V

  REPRESENTATIONS AND WARRANTIES OF THE INVESTORS; LIMITATIONS ON DISPOSITION

     Each Investor hereby represents and warrants to the Company that as of the
Effective Date:

     Section 5.01. Organization. Each Investor is a limited partnership duly
organized, validly existing and in good standing under the laws of the State of
Delaware (except for RKB Capital, L.P., which is organized, validly existing and
in good standing under the laws of the State of Minnesota) and has the requisite
power and authority to carry on its business as it is now being conducted.

     Section 5.02. Due Authorization. Each Investor has all right, power and
authority to enter into this Agreement and the other Transaction Documents to
which it is a party and to consummate the Transactions. The execution and
delivery by each Investor of this Agreement and the other Transaction Documents
to which it is a party and the consummation by it of the Transactions (a) are
within its power and authority and (b) have been duly authorized by all
necessary action on the part of such entity. This Agreement and each of the
other Transaction Documents to which it is a party constitute a valid and
binding agreement of such entity enforceable against such entity in accordance
with their respective terms, except as enforceability against each Investor may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium or
similar laws now or hereafter in effect relating to the rights of creditors
generally and by legal and equitable limitations on the enforceability of
specific remedies (regardless of whether enforcement is considered in a
proceeding in equity or at law).

                                       4
<PAGE>

     Section 5.03. Ownership of Stock. Investor has, and upon delivery to the
Company of the Series A Shares and Warrants and the delivery to Investor of the
Series A-1 Stock and the cash consideration, the Company will acquire, good and
valid title to the Series A Shares and Warrants, free and clear of any Liens.

     Section 5.04. Consents and Approvals; Non-Contravention. Neither the
execution, delivery or performance of this Agreement, nor the consummation by
the Investor of the Transactions will (a) require any consent, approval or
authorization under any contract, lease or other agreement entered into by
Investor, (b) violate any order, writ, injunction, decree, statute, rule or
regulation applicable to Investor, or (c) result in a violation or breach of, or
constitute (with or without notice or lapse of time or both) a default (or give
rise to any right of termination, amendment, cancellation or acceleration or any
loss of a material benefit) under, or result in the creation or imposition of
(or the obligation to create or impose) any Lien upon any of the Series A Shares
or the Warrants under any note, bond, mortgage, indenture, lease, license,
contract, agreement or other instrument or obligation to which Investor is a
party or by which Investor or any of its properties or assets may be bound.

     Section 5.05. Restricted Securities. Investor understands that the
securities it is acquiring are characterized as "restricted securities" under
the federal securities laws inasmuch as they are being acquired from the Company
in exchange for restricted securities in a transaction exempt from registration
under Section 3(a)(9) of the Securities Act of 1933, as amended (the "Act"), and
that under such laws and applicable regulations, such securities may be resold
without registration under the Act only in certain limited circumstances. In
this connection, Investor represents that it is familiar with Rule 144,
promulgated under the Act, as presently in effect, and understands the resale
limitations imposed hereby and by the Act.

                                  ARTICLE VI

                                 MISCELLANEOUS

     Section 6.01. Further Assurances; Investor Acknowledgement. At any time or
from time to time after the Effective Date, each Investor agrees to cooperate
with the Company, and at the request of the Company, to execute and deliver any
further instruments or documents and to take all such further action as the
Company may reasonably request in order to evidence or effectuate the
consummation of the Transactions. In addition, each Investor acknowledges that
upon the Effective Date, such Investor will have no further right, title or
interest in or to the Series A Stock (including, without limitation, any and all
cumulative dividends accrued but unpaid thereon) or the Warrants, that the
Series A Stock and Warrants held by such Investor shall be deemed cancelled and
of no further force or effect and that such Investor shall only have the right
to receive the Series A-1 Stock and the cash consideration for the Series A
Stock and the Warrants, respectively, in addition to such other rights set forth
in this Agreement or the Transaction Documents.

     Section 6.02. Expenses. The Company will pay the reasonable legal and
accounting fees and expenses of the Investors in connection with this Agreement
promptly following the consummation of the transctions contemplated hereby.

                                       5
<PAGE>

     Section 6.03. Remedies Cumulative. Except as herein provided, the remedies
provided herein shall be cumulative and shall not preclude assertion by any
party hereto of any other rights or the seeking of any other remedies against
the other party hereto.

     Section 6.04. Brokerage. Each party hereto will indemnify and hold harmless
the others against and in respect of any claim for brokerage or other commission
relative to this Agreement or to the transaction contemplated hereby, based in
any way on agreements, arrangements or understandings made or claimed to have
been made by such party with any third party.

     Section 6.05. Severability. Whenever possible, each provision of this
Agreement shall be interpreted in such a manner as to be effective and valid
under applicable law, but if any provision of this Agreement shall be prohibited
by or invalid under applicable law, such provisions shall be ineffective to the
extent of such prohibition or invalidity, without invalidating the remainder of
such provision or the remaining provisions of this Agreement.

     Section 6.06. Parties in Interest. All covenants and agreements contained
in this Agreement by or on behalf of any of the parties hereto shall bind and
inure to the benefit of the respective legal representatives, successors and
assigns of the parties hereto whether so expressed or not.

     Section 6.07. Notices. Notices required under this Agreement shall be
deemed to have been adequately given if delivered personally or by commercial
messenger or courier service, or mailed by registered or certified mail (return
receipt requested) or sent via facsimile (with acknowledgement of complete
transmission), to an Investor at its address set forth in the Schedule of
Investors or to the Company at the address set forth in the first paragraph of
this Agreement or such other address as such party may from time to time
designate in writing.

     Section 6.08. No Waiver. No failure to exercise and no delay in exercising
any right, power or privilege granted under this Agreement shall operate as a
waiver of such right, power or privilege. No single or partial exercise of any
right, power or privilege granted under this Agreement shall preclude any other
or further exercise thereof or the exercise of any other right, power or
privilege. The rights and remedies provided in this Agreement are cumulative and
are not exclusive of any rights or remedies provided by law.

     Section 6.09. Amendments. Except as herein provided, this Agreement may be
modified or amended only by a writing signed by the Company and by the
Investors.

     Section 6.10. Survival of Agreements, etc. All agreements, representations
and warranties contained in this Agreement or made in writing by or on behalf of
the Company or the Investors in connection with the Transactions contemplated by
this Agreement shall survive the execution and delivery of this Agreement.

     Section 6.11. Construction. This Agreement shall be governed by and
construed in accordance with the procedural and substantive laws of the State of
New York without regard for its conflicts-of-laws rules. The Company agrees that
it may be served with process in the State of New York and any action for breach
of this Agreement prosecuted against it in the courts of that State.

                                       6
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     Section 6.12. Waiver of Jury Trial. THE COMPANY AND THE INVESTORS HEREBY
WAIVE ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY ACTION,
PROCEEDING OR LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN
CONNECTION WITH THIS AGREEMENT.

     Section 6.13. Entire Understanding. This Agreement expresses the entire
understanding of the parties and supersedes all prior and contemporaneous
agreements and undertakings of the parties with respect to the subject matter of
this Agreement.

     Section 6.14. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
taken together shall constitute one agreement.

     Section 6.15. Successors and Assigns. This Agreement shall bind and inure
to the benefit of the Company and the Investors and the respective successors,
permitted assigns, heirs and personal representatives of the Company and the
Investors, provided that the Company may not assign its rights or obligations
under this Agreement to any person without the prior written consent of the
Investors, and provided further that the Investors may not assign their rights
or obligations under this Agreement to any person (other than a direct or
indirect wholly-owned affiliate of the Investors) without the prior written
consent of the Company, which consent shall not be unreasonably withheld or
delayed.

     Section 6.16. Board Representation; VCOC

           (a)   Section 4 of the Certificate of Designation provides that the
holders of the Series A-1 Preferred Stock shall be entitled to elect one
director (the "Preferred Stock Designee") to the Board of Directors of the
Company subject to the terms set forth therein.  For so long as the Investors
and their Affiliates, as holders of the Series A-1 Preferred Stock maintain
ownership at the Ownership Threshold (as defined in Section 6.16(b) below),
shall have the right under this Agreement and the Certificate of Designation to
designate the Preferred Stock Designee, TWCP shall have the right, separately
enforceable by it without further action required or permitted by any of the
Investors or their Affiliates, to designate such Preferred Stock Designee.

           (b)   In the event the Certificate of Designation is no longer in
effect, and so long as the Investors and their Affiliates beneficially own in
the aggregate Series A-1 Preferred Stock and Common Shares issuable upon
conversion or exercise thereof (collectively, the "Common Shares") representing
(and assuming conversion and exercise of all such Series A-1 Preferred Stock)
greater than 15% of the Common Shares (assuming such conversion and exercise)
acquired by the Investors in the aggregate on the Effective Date (and adjusting
for stock splits, stock combinations and like transactions) (such ownership
threshold referred to as the "Ownership Threshold"), TWCP shall have the right
to designate hereunder, at all times and from time to time, one director of the
Company (individuals designated pursuant to this paragraph, the "Purchasers'
Designee").  In the event of a vacancy caused by the disqualification, removal,
resignation or other cessation of service of any Purchasers' Designee from the
Board, the Board shall elect as a director (to serve until the term of such
Purchaser Designee would have expired) a new Purchasers' Designee who has been
designated by TWCP in an additional

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Purchasers' Designee Notice (as defined in Section 6.06(c) below that has been
provided to the Company at least seven (7) days prior the date of a regular
meeting of the Board. TWCP shall nominate each Purchasers' Designee pursuant to
an additional Purchasers' Designee Notice in advance of each meeting of
shareholders at which such Purchasers' Designee is to be elected.

           (c)   TWCP shall provide notice to the Company (the "Purchasers'
Designee Notice") as required by Section 6.06(b) above for each Purchasers'
Designee, which notice shall contain the following information:  (i) the name of
the Person it has designated to become director, and (ii) all information
required by Regulation 14A and Schedule 14A under the Exchange Act with respect
to each such Purchasers' Designee.  The Purchasers' Designee may be any person
designated by TWCP, including persons who are officers, directors or employees
of the Purchasers or their Affiliates.

           (d)   The Company agrees to include the Purchasers' Designee to be
added to or retained on the Board pursuant to this Agreement in the slate of
nominees recommended by the Board to the Company's shareholders for election as
director and shall use its reasonable efforts to cause the election or
reelection of a Purchasers' Designee to the Board at each meeting of
shareholders at which the Purchasers' Designee is up for election, including
soliciting proxies in favor of the election of such Persons, it being understood
that efforts consistent with those used for other members of the slate
recommended by the Board shall be deemed reasonable. In the event that,
notwithstanding the provisions of this Section 6.06(d), the Purchasers' Designee
is not elected to the Board then, at the written request of TWCP made within 30
days after the date of the shareholder meeting at which the Purchasers' Designee
was not elected, the Company shall cause, at the request of TWCP, the
appointment of the Purchaser's Designee or any other Person designated by TWCP,
as a non-voting observer (a "Non-Voting Observer") to the Board of the Company;
it being understood that TWCP may from time to time change the designation of
such Non-Voting Observer. The Company shall afford to any Purchasers' Designee
who serves as a Non-Voting Observer, on as nearly equivalent basis as is
possible (other than the right to vote) as would have been the case if the
Purchasers' Designee had been elected to the Board, the opportunity to
meaningfully participate in, express views with respect to and have influence on
the deliberations of the Board, including through receipt, at the same time as
the Board receives the same, of all information and material as is distributed
to the Board.

           (e)   So long as the Investors and their Affiliates beneficially own
in the aggregate Series A-1 Preferred Stock and Common Shares exceeding the
Ownership Threshold, without the prior written consent of TWCP, the Board of
Directors shall not amend the provisions of the by-laws of the Company
specifying that the size of the entire Board shall consist of eight members.

           (f)   So long as the Investors and their Affiliates beneficially own
in the aggregate Series A-1 Preferred Stock and Common Shares exceeding the
Ownership Threshold, TWCP shall have the right to consult with and advise
management of the Company on significant business issues, including finances and
accounts of the Company and management's proposed annual operating plans, and
meet with management at the Company's facilities at mutually agreeable times for
such consultation and advice, including to review progress in achieving said
plans subject to the execution of a mutually acceptable non-disclosure
agreement.

                                       8
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The Company agrees to consider the advice given and any proposals made by TWCP,
provided the Company should be under no obligation to accept or follow such
advice.

           (g)   The rights set forth in this Section 6.06 are intended to
satisfy the requirement of contractual management rights for purposes of
qualifying TWCP's interests in the Company as venture capital investments for
purposes of the Department of Labor's "plan assets" regulations, and in the
event such rights are not satisfactory for such purpose as to TWCP, the Company
and the Investors shall reasonably cooperate in good faith to agree upon
mutually satisfactory management rights which satisfy such regulations.

           (h)   Unless otherwise agreed by the Company, the Investors shall
cause the Purchasers' Designee then serving on the Board or as a Non-Voting
Observer to resign from the Board or as a Non-Voting Observer immediately at any
time after the Investors and their Affiliates beneficially own in the aggregate
Series A-1 Preferred Stock and Common Shares less than the Ownership Threshold.

     Section 6.17. Committees

           (a)   The Preferred Stock Designee or Purchaser's Designee, as the
case may be, shall be granted representation (as of the Closing Date) on all
Board committees, including the audit and compensation committees. In the event
that a Non-Voting Observer is serving on the Board as the representative for the
Investors, such Non-Voting Observer shall be afforded, on as nearly equivalent
basis as is possible (other than the right to vote) the opportunity to
meaningfully participate in and express views with respect to the deliberations
of the committees.

           (b)   The Board will not establish an executive committee authorized
to exercise the power of the Board generally unless the Investors are granted
representation on such committee proportional to its representation on the
Board, nor will the Board establish or employ committees (unless the Investors
are granted proportional representation thereon) as a means designed to
circumvent or having the effect of circumventing the rights of the Investors
under this Agreement to representation on the Board.

                 [Remainder of Page Intentionally Left Blank]

                                       9
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officer or person as of the
Effective Date.

                              OPTIKA, INC.

                              By:  /s/   Mark Ruport
                                 ----------------------------
                                         Mark Ruport
                                         President

                              INVESTORS:

                              THOMAS WEISEL CAPITAL PARTNERS, L.P.

                              By:   Thomas Weisel Capital Partners LLC, its
                                    general partner

                              By:   Thomas Weisel Partners Group LLC, its
                                    managing member

                              By:   /s/   Alan B. Menkes
                                    -----------------------------------------
                                    Name:____________________________________
                                    Title:___________________________________

                              TWP CEO FOUNDERS' CIRCLE (AI), L.P.

                              By:   Thomas Weisel Capital Partners LLC, its
                                    general partner

                              By:   Thomas Weisel Partners Group LLC, its
                                    managing member

                              By:   /s/   Alan B. Menkes
                                    -----------------------------------------
                                    Name:____________________________________
                                    Title:___________________________________

                                       10
<PAGE>

                              TWP CEO FOUNDERS' CIRCLE (QP), L.P.

                              By:   Thomas Weisel Capital Partners LLC, its
                                    general partner

                              By:   Thomas Weisel Partners Group LLC, its
                                    managing member

                              By:   /s/   Alan B. Menkes
                                    -----------------------------------------
                                    Name:____________________________________
                                    Title:___________________________________

                              THOMAS WEISEL CAPITAL PARTNERS
                              EMPLOYEE FUND, L.P.

                              By:   Thomas Weisel Capital Partners LLC, its
                                    general partner

                              By:   Thomas Weisel Partners Group LLC, its
                                    managing member

                              By:   /s/   Alan B. Menkes
                                    -----------------------------------------
                                    Name:____________________________________
                                    Title:___________________________________

                              TWP 2000 C0-INVESTMENT FUND, L.P.

                              By:   Thomas Weisel Capital Partners LLC, its
                                    general partner

                              By:   Thomas Weisel Partners Group LLC, its
                                    managing member

                              By:   /s/   Alan B. Menkes
                                    -----------------------------------------
                                    Name:____________________________________
                                    Title:___________________________________

                                       11
<PAGE>

                              THOMAS WEISEL CAPITAL PARTNERS (DUTCH), L.P.

                              By:  Thomas Weisel Capital Partners (Dutch)
                                   LLC, its general partner

                              By:  Thomas Weisel Capital Partners LLC, its
                                   managing member

                              By:  /s/   Alan B. Menkes
                                   -----------------------------------------
                                   Name:____________________________________
                                   Title:___________________________________

                              THOMAS WEISEL CAPITAL PARTNERS (DUTCH II), L.P.

                              By:  Thomas Weisel Capital Partners (Dutch)
                                   LLC, its general partner

                              By:  Thomas Weisel Capital Partners LLC, its
                                   managing member

                              By:  /s/   Alan B. Menkes
                                   -----------------------------------------
                                   Name:____________________________________
                                   Title:___________________________________

                              RKB CAPITAL, L.P.

                              By:   /s/ Peter Schleider
                                    ----------------------------------------
                                    Name:  Peter Schleider
                                    Title: General Partner

                                       12
<PAGE>

                                  Schedule A

                             Schedule of Investors
                             ---------------------

<TABLE>
<CAPTION>
                                                                           (2)

                                                  (1)                     Number of
                                                                         Shares of                (3)                    (4)
                                                 Number               Series A-1 Stock
                                             of Shares of            to be Received on          Number of          Consideration for
Name and Address                             Series A Stock              Exchange            Warrant Shares         Warrant Shares
---------------------------------------      --------------          -----------------       -------------         -----------------
<S>                                          <C>                     <C>                     <C>                   <C>
Thomas Weisel Capital Partners, L.P.*             589,808                  589,808               247,656                $  .008

TWP CEO Founders' Circle (AI), L.P.**              13,627                   13,627                 5,722                $ .0002

TWO CEO Founders' Circle (QP), L.P.**              49,786                   49,786                20,905                $ .0007

Thomas Weisel Capital Partners Employee             5,550                    5,550                 2,330                $.00008
Fund, L.P.**

TWP 2000 Co-Investment Fund, L.P.**                 8,889                    8,889                 3,732                $.00012

Thomas Weisel Capital Partners (Dutch),            13,799                   13,799                 5,794                $ .0002
L.P.**

Thomas Weisel Capital Partners (Dutch              13,799                   13,799                 5,794                $ .0002
II), L.P.**

RKB Capital, L.P.                                  36,593                   36,593                15,365                $ .0005
   150 West Lake Street
   Wayzata, MN  55391
                                             --------------          -----------------       -------------         -----------------
TOTAL:                                            731,851                  731,851               307,298                $   .01
                                             --------------          -----------------       -------------         -----------------
</TABLE>

*     One Montgomery Street, Suite 3700, San Francisco, CA  94104

**    c/o Thomas Weisel Capital Partners, L.L.C., One Montgomery Street,
      Suite 3700, San Francisco, CA 94104

                                     A-1<PAGE>

                                                                   Exhibit 10.23

               FIRST AMENDMENT TO REGISTRATION RIGHTS AGREEMENT

        This First Amendment to Registration Rights Agreement (this "First
Amendment"), is made by and between Optika Inc., a Delaware corporation (the
"Company") and the investors set forth on the signature page hereto (the
"Purchasers"), as of this 7th day of May, 2001. The Company and the Purchasers
are also sometimes collectively referred to herein as the "Parties" and
individually as a "Party."

        WHEREAS, the Parties, in addition to other parties set forth therein,
entered into that certain Registration Rights Agreement dated as of February 23,
2000 (the "Agreement");

        WHEREAS, the Parties now desire to amend the Agreement pursuant to the
terms and conditions set forth herein.

        NOW, THEREFORE, in consideration of the mutual covenants and agreements
set forth in the Agreement and as hereinafter set forth, and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the Parties agree as follows:

        1.  The first whereas clause of the Agreement is hereby amended in its
entirety to read as follows:

                "WHEREAS, the Company proposes to issue and sell (i) an
            aggregate of 731,851 shares of Series A Convertible Preferred Stock,
            par value $0.001 per share (the "Preferred Stock") of the Company,
            the terms of which are set forth in the Certificate of Designation
            in the form of Exhibit 2.2 to the Purchase Agreement (as defined
            below) and (ii) warrants (the "Warrants") to purchase an aggregate
            of 307,298 shares of the Company's Common Stock, par value $0.001
            per share (the "Common Stock"), the terms of which are set forth in
            the Warrant Agreement attached in the form of Exhibit 1.2(b) to the
            Purchase Agreement;"

        2.  The following is added after the fourth whereas clause in the
Agreement:

                "WHEREAS, the Company and the Purchasers have entered into that
            certain Exchange Agreement dated of even date herewith (the
            "Exchange Agreement") under which the Company will (i) issue to the
            Purchasers shares of the Series A-1 Convertible Preferred Stock,
            $0.001 par value per share, of the Company (the "Securities"), in
            exchange for the shares of Preferred Stock owned by such Purchaser,
            on a one-share for one-share basis and (ii) purchase from the
            Purchasers the Warrants for an aggregate purchase price of $0.01;

        3.  The definition of "Closing" in Section 4 of the Agreement is amended
            in its entirety to read as follows:

                "Closing" shall mean the date of the closing of the issuance of
            the securities pursuant to the Exchange Agreement.
<PAGE>

        4.  The definition of "Registrable Shares" in Section 1 of the Agreement
is amended by deleting the phrase "or pursuant to the Warrant Agreement" at the
end of such definition.

        5.  The definition of "Purchasers" in Section 1 of the Agreement is
amended in its entirety to read as follows:

                "Purchasers" shall have the meaning assigned thereto in the
            First Amendment."

        6.  The Company covenants and agrees that it will use its reasonable
efforts to take or cause to be taken, all actions and to do, or cause to be
done, all things necessary or desirable under applicable laws and regulations to
consummate the transactions contemplated by this First Amendment.

        7.  This First Amendment and all rights hereunder may not be assigned or
transferred by either Party without the prior written consent of each of the
Parties hereto.

        8.  All capitalized terms used and not otherwise defined herein shall
have the same meanings as set forth in the Agreement.

        9.  Except as expressly modified by the terms hereof, the terms and
provisions of the Agreement shall remain in full force and effect as originally
written.

        10. Signatures on this First Amendment may be communicated by facsimile
transmission and shall be binding upon the Parties transmitting the same by
facsimile transmission. If executed in counterparts, this First Amendment will
be as effective as if simultaneously executed.

                 [Remainder of Page Intentionally Left Blank]

                                       2
<PAGE>

        IN WITNESS WHEREOF, the Parties hereto have caused this First Amendment
to be duly executed by their respective authorized officers as of the day and
year first above written.

                                        OPTIKA INC.

                                        By:  /s/ Mark Ruport
                                             --------------------------
                                                 Mark Ruport
                                                 President

                                        INVESTORS:

                                        THOMAS WEISEL CAPITAL PARTNERS, L.P.

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its general partner

                                        By:  Thomas Weisel Partners Group LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                        TWP CEO FOUNDERS' CIRCLE (AI), L.P.

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its general partner

                                        By:  Thomas Weisel Partners Group LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                       3
<PAGE>

                                        TWP CEO FOUNDERS' CIRCLE (QP), L.P.

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its general partner

                                        By:  Thomas Weisel Partners Group LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                        THOMAS WEISEL CAPITAL PARTNERS
                                        EMPLOYEE FUND, L.P.

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its general partner

                                        By:  Thomas Weisel Partners Group LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                        TWP 2000 C0-INVESTMENT FUND, L.P.

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its general partner

                                        By:  Thomas Weisel Partners Group LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                       4
<PAGE>

                                        THOMAS WEISEL CAPITAL PARTNERS
                                        (DUTCH), L.P.

                                        By:  Thomas Weisel Capital Partners
                                             (Dutch) LLC, its general partner

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                        THOMAS WEISEL CAPITAL PARTNERS (DUTCH
                                        II), L.P.

                                        By:  Thomas Weisel Capital Partners
                                             (Dutch) LLC, its general partner

                                        By:  Thomas Weisel Capital Partners LLC,
                                             its managing member

                                        By:  /s/ Alan B. Menkes
                                             -----------------------------------
                                             Name:______________________________
                                             Title:_____________________________

                                        RKB CAPITAL, L.P.

                                        By:  /s/ Peter Schleider
                                             -----------------------------------
                                             Name: Peter Schleider
                                             Title: General Partner

                                       5

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