Document:

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                                                                     EXHIBIT 4.4

                            Tyler Technologies, Inc.
                           2800 West Mockingbird Lane
                               Dallas, Texas 75235

                               Purchase Agreement

                      $10,001,400 in Shares of Common Stock
                                 (the "Shares")

                                                                    May l9, 2000

To       the Purchasers of the
         above Shares listed in
         Schedule 1 hereto:

Gentlemen:

         Tyler Technologies, Inc., a Delaware corporation (the "Company"),
hereby agrees with you as follows:

         1. AUTHORIZATION OF COMMON STOCK. The Company will authorize the issue
and sale of up to $10,001,400 in shares (the "Shares") of Common Stock, $0.01
par value (the "Common Stock"), of the Company, at the Stock Purchase Price.
Certain capitalized terms used in this Agreement are defined in Section 11.

         2. PURCHASE AND SALE OF COMMON STOCK. The Company will issue and sell
to you and, subject to the terms and conditions of this Agreement, you will
purchase from the Company, at the Closing provided for in Section 3, the
aggregate number of shares of Common Stock specified opposite your name in the
Schedule of Purchasers, in each case at a purchase equal to the lesser of (i)
$3.00 per share or (ii) 80% of the average closing price for shares of Common
Stock on the New York Stock Exchange for the 20 Trading Days prior to Closing
(the "Stock Purchase Price").

         3. CLOSING. The sale of the Common Stock to be purchased by you will
take place at the offices of Sanders Morris Harris Inc., 3100 Chase Tower,
Houston, Texas 77002, at 10:00 a.m., Houston Time, at a closing (the "Closing")
on May 18, 2000, or on such other business day thereafter as may be agreed upon
by the Company and you.

         Within five Business Days following the Closing, the Company will
deliver to you the Shares purchased by you at such Closing in the form of one
certificate (or such greater number of certificates as you may request), each
dated the date of the Closing and registered in your name (or in the name of
your nominee as indicated on the Schedule of Purchasers or otherwise made known
in writing by you to the Company prior to the Closing), against delivery by you
to the Company or its order of immediately available funds in the amount of the
purchase price therefor.

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         4. REPRESENTATIONS AND WARRANTIES. The Company represents and warrants
to you that:

         4.1. ORGANIZATION, QUALIFICATION, STANDING, CAPITAL STOCK,
SUBSIDIARIES, ETC. The Company has been duly organized and is validly existing
and in good standing as a corporation under the laws of the State of Delaware,
and each of its Subsidiaries is a corporation duly organized, validly existing,
and in good standing under the laws of the jurisdiction of its incorporation or
organization, with power and authority (corporate and other) to own or lease its
properties and to conduct its business as described in the Memorandum; the
Company and each Subsidiary is duly qualified to do business and in good
standing as a foreign corporation in all other jurisdictions in which its
ownership or leasing of properties, or the conduct of its business requires or
may require such qualification where the failure to be so qualified would have a
Material Adverse Effect; the Company and each Subsidiary is in possession of and
operating in compliance in all material respects with all franchises, grants,
authorizations, licenses, permits, easements, consents, certificates, and orders
required for the conduct of their business as described in the Memorandum, where
the failure to possess or comply therewith would have a Material Adverse Effect.
The authorized capital stock of the Company consists of 100,000,000 shares of
Common Stock, $0.01 par value per share, of which 43,290,687 shares were issued
and outstanding at March 31, 2000, and 1,000,000 shares of Preferred Stock,
$10.00 par value per share, none of which shares of Preferred Stock were issued
and outstanding at the Closing Date. All of such outstanding shares have been
validly issued and are fully paid and nonassessable. The Company has reserved
6,300,000 shares of Common Stock for issuance pursuant to options and warrants
outstanding at March 31, 2000. Except as set forth on Schedule 4.1, there are
not outstanding, nor is the Company subject to any agreement, arrangement, or
understanding under which there may become outstanding, any option, warrant, or
other right to purchase or subscribe to, or security convertible into or
exchangeable for, any shares of capital stock of any class of the Company. The
Company's Subsidiaries are identified in Exhibit 21 of the Form 10-K and such
Exhibit correctly states the jurisdiction of organization and the extent of the
Company's ownership of outstanding voting securities of each such Subsidiary.
All such voting securities are owned by the Company free and clear of any liens,
claims or encumbrances of any nature, except for the lien of Bank of America,
N.A. under the Company's Revolving Credit Agreement.

         4.2 FINANCIAL STATEMENTS, SUBSEQUENT CHANGES, ETC. The Form 10-K, one
or more copies of which have been furnished to you, contains consolidated
balance sheets of the Company and its consolidated Subsidiaries, and the
consolidated statements of income, stockholders' equity, and cash flows of the
Company and its consolidated Subsidiaries for each of the three years ended
December 31, 1998, including notes thereto, and the opinion of Ernst & Young
LLP, independent certified public accountants with respect to such financial
statements. All of the foregoing financial statements are complete and correct
in all material respects and fairly present in all material respects the
consolidated financial condition of the Company and its consolidated
Subsidiaries at the respective dates of said balance sheets and the consolidated
results of operations of the Company and its consolidated Subsidiaries for the
respective periods covered thereby. Such financial statements have been prepared
in accordance with generally accepted accounting principles applied on a
consistent basis throughout the periods involved (except as otherwise noted
therein). There were no material liabilities, direct or indirect, fixed or
contingent, of the Company and its consolidated Subsidiaries as of the
respective dates of such balance sheets that are not reflected therein or in the
notes thereto. Except as disclosed in the Memorandum, there has been no material
change in the consolidated condition, financial or otherwise, or operations of
the Company and its consolidated Subsidiaries since December 31,

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1999, nor has the Company or any Subsidiaries, except for the execution,
delivery, and performance of this Agreement, incurred any Indebtedness for
borrowed money, incurred any material liability, contingent or otherwise, except
in the ordinary course of business (including acquisitions of business and
assets), or entered into any material commitment or other transaction not in the
ordinary course of business since such date.

         4.3. OTHER INFORMATION AS TO COMPANY. The Confidential Private
Placement Memorandum dated April 19, 2000, together with the Exhibits thereto
and the documents incorporated by reference therein (the "Memorandum"), does not
contain any misstatement of a material fact or omit to state any material fact
necessary to be stated therein or necessary in order to make the statements
therein not misleading; provided, however, that with respect to all projections
and estimates furnished to you, the Company represents and warrants only that
the same were prepared in good faith and based, to the best of its knowledge,
upon reasonable assumptions and that nothing has occurred, which has caused or
may cause any projection or estimate to be or to become inaccurate in any
material adverse respect as of the date hereof. In the event the Company has
furnished to you information which corrects information previously furnished,
the information last furnished is deemed to govern for purposes of this Section
4.3.

         4.4. LITIGATION. Except as disclosed in the Memorandum, there are no
legal or governmental proceedings pending to which the Company or any Subsidiary
is a party or of which any of their properties are the subject, which, if
determined adversely to the Company or its Subsidiaries would individually or in
the aggregate result in a Material Adverse Effect; and, to the best knowledge of
the Company after due inquiry, no such proceedings are threatened, except as set
forth in the Memorandum.

         4.5. FRANCHISES, LICENSES, TRADEMARKS, ETC. The Company and the
Subsidiaries have all material franchises, permits, licenses and other authority
as are necessary to enable it to conduct its business as now conducted and as
proposed to be conducted, and to the best of the Company's knowledge, neither
the Company nor any Subsidiary is in material default under any such franchises,
permits, licenses or other authority. To the best knowledge of the Company, the
Company and its Subsidiaries own (or have made appropriate application for) or
have the right to use all trademarks, trademark rights, trade names, trade name
rights, copyrights, and similar intangible assets or rights that are material to
their business (collectively "Intellectual Property"). The Company has no
knowledge of any adverse claim or facts that could give rise to a claim, which
creates a reasonable doubt as to the ownership or validity of the Intellectual
Property. No Governmental Body has rendered any opinion, decision, or judgment
that could limit, cancel, or question the validity of any of the Intellectual
Property. To the Company's knowledge, no other intellectual property is
necessary to enable the Company to conduct its business substantially as
currently conducted or as proposed to be conducted. The Company is not obligated
or under any liability whatsoever to make any material payments in the nature of
royalties, license fees, or otherwise to any owner of, licensee of, or other
claimant to, any Intellectual Property. The Company has no knowledge of
intellectual property owned by others that is used by the Company in the conduct
of its business as currently conducted or as proposed to be conducted without
valid license or other form of arrangement. To the knowledge of the Company, the
continued use of the Intellectual property by the Company will not constitute an
infringement, misappropriation, or misuse of any patent, trademark, trade name,
copyright, invention, trade secret, proprietary information, nondisclosure, or
other rights of any third party. No person has filed, or to the knowledge of the
Company, threatened any claim before a Governmental Body regarding the use of,
or challenging the validity or effectiveness of the Intellectual Property or

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any license, contract, or commitment relating thereto, and the Company knows of
no valid basis for any such claim. To the Company's knowledge, all material
trade secrets, know how, and other trademarked, or copyrighted material has at
all times been kept confidential by the Company, its employees, and agents so as
to protectable under common law principles.

         4.6. DUE AUTHORIZATION AND COMPLIANCE WITH OTHER INSTRUMENTS. This
Agreement is, and the Shares when issued and delivered will be, valid and
legally binding obligations of the Company and the Shares will be entitled to
the benefits of this Agreement. The Shares to be issued to you hereunder have
been duly authorized and when issued will be validly issued, fully paid and
nonassessable. The Shares are not subject to any preemptive or similar rights on
the part of holders of shares of capital stock of the Company.

         4.7. BURDENSOME AND CONFLICTING AGREEMENTS AND VIOLATIONS OF CHARTER
Provisions. Neither the Company nor any Subsidiary is currently bound by any
agreement or instrument or subject to any charter or other corporate restriction
that materially and adversely affects its business, properties, operations, or
condition, financial or otherwise. The Company is not in violation of its
articles of incorporation or by-laws, or in material default, or with the giving
of notice or lapse of time or both, would be in material default, in the
performance of any material obligation, agreement, or condition contained in any
lease license, material contract, indenture, or loan agreement or in any bond,
debenture, note, or other evidence of indebtedness, except as set forth in the
Memorandum and except for such defaults as would not have a Material Adverse
Effect. Neither the authorization, execution, and delivery of this Agreement or
the issuance of the Shares, the consummation of the transactions herein and
therein contemplated, nor the fulfillment of or compliance with the terms hereof
and thereof, will conflict with or result in a breach of any of the terms of the
articles of incorporation or by-laws, or any material loan agreement, mortgage,
deed of trust, indenture, or other agreement or instrument to which the Company
or any Subsidiary is a party or by which the Company or any Subsidiary is bound,
except to the extent that the same have been, or prior to the Closing Date will
be, waived or cured, or, to the best knowledge of the Company, any law, statute,
order, rule, administrative regulation, or decree of any court, or governmental
agency or body having jurisdiction over the Company, its Subsidiaries, or their
properties, which conflict, default, or breach individually or in the aggregate
could reasonably be expected to result in a Material Adverse Effect.

         4.8. CONSENTS AND APPROVALS. To the best knowledge of the Company, no
consent, approval, authorization or order of any Governmental Body is required
for the consummation by the Company of the transactions contemplated by this
Agreement, except such as may be required by the National Association of
Securities Dealers, Inc., the Securities Act, or the Rules and Regulations or
state securities or Blue Sky laws. The Company has obtained or made all
necessary consents, approvals, waivers and notifications of stockholders,
creditors, lessors and other non-governmental persons, in each case, in
connection with the execution of this Agreement and the issuance of the Shares
except for securities law filings that will be made after the Closing.

         4.9. TAX RETURNS AND PAYMENTS. The Company and its Subsidiaries have
filed all United States federal, state, county, local and foreign national,
provincial and local returns and reports which were required to be filed on or
prior to the date herein in respect of all income, withholding, franchise,
payroll, excise, property, sales, use, value-added or other taxes or levies,
imposts, duties, license and registration fees, charges, assessments or
withholdings of any nature whatsoever (together, "Taxes"), and has paid all
Taxes (and any related penalties, fines and

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interest) which have become due pursuant to such returns or reports or pursuant
to any assessment which has become payable, or, to the extent its liability for
any Taxes (and any related penalties, fines and interest) has not been fully
discharged, adequate reserves therefor have been established, except where the
failure to do so would not have a Material Adverse Effect. All such returns and
reports filed on or prior to the date hereof have been properly prepared and are
true, correct (and to the extent such returns reflect judgments made by the
Company, such judgments were reasonable under the circumstances) and complete in
all material respects, except where the failure to do so would not have a
Material Adverse Effect. The charges, accruals and reserves on the books of the
Company with respect to taxes for all fiscal periods are adequate, in the
opinion of the Company, and the Company does not know of any actual or proposed
tax assessment for any fiscal period or of any basis therefor against which
adequate reserves have not been set up. The Company has not been advised that
any federal income tax return of the Company has been, or will be, examined or
audited by the Internal Revenue Service.

         4.10. OFFERING OF THE SHARES. Neither the Company nor anyone authorized
to act on its behalf has or will directly or indirectly sell or offer the Shares
or any part thereof or any similar securities to, or solicit any offer to buy
any thereof from, any Person so as to cause a violation of the Securities Act.
In connection with the offering of the Shares, the Company has agreed to pay the
Placement Agent a fee equal to 7% of the gross proceeds to the Company from the
sale of the Shares.

         4.11. OUTSTANDING REGISTRATION Rights. Except as described in Schedule
4.11 hereto or in the Memorandum, the Company is not a party to any contract or
agreement pursuant to which any other party or parties thereto have the right to
require the Company (on a best efforts basis or otherwise) (a) to register
securities of the Company under the Securities Act for sale by or on behalf of
such party or parties or (b) to notify such party or parties of the Company's
intention to file a registration statement under the Securities Act and at the
request of such party or parties to include therein securities of the Company
for sale by or on behalf of such party or parties.

         4.12. EXCHANGE ACT DOCUMENTS. The Common Stock is registered pursuant
to Section 12(b) of the Exchange Act and is listed on the New York Stock
Exchange. All Exchange Act reports and statements required to be filed by the
Company under the Exchange Act, and the rules and regulations thereunder, due at
or prior to the date of this Agreement have been made. Each Exchange Act
Document conformed in all material respects at the time of its filing to the
requirements of the Exchange Act and the rules and regulations thereunder, and
no Exchange Act document includes any untrue statement of a material fact or
omits to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading.

         4.13. OTHER ADVERSE FACTS, ETC. To the best of the Company's knowledge,
there are no existing facts or circumstances which materially and adversely
affect, or (insofar as the Company can now reasonably foresee) in the future may
materially and adversely affect, the business, results of operations or
condition, financial or otherwise, of the Company and the Subsidiaries, on a
consolidated basis, which are not disclosed in the Form 10-K, other Exchange Act
Documents filed with the SEC pursuant to the Exchange Act, or in this Agreement
or any exhibit hereto, the Memorandum, or which are required to be disclosed by
the Company in an Exchange Act Document.

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         5.  CONDITIONS PRECEDENT.

         5.1. CLOSING. Your obligation to purchase from the Company the number
of Shares specified opposite your name in the Schedule of Purchasers at the
Closing shall be subject to the following conditions precedent:

                  (a) OPINIONS OF COMPANY COUNSEL. You shall have received from
         Gardere & Wynne, LLP, counsel for the Company, an opinion, dated the
         Closing Date, satisfactory in form and substance to the Placement
         Agent.

                  (b) REPRESENTATIONS AND DEFAULTS. The representations and
         warranties made by the Company herein shall be true and correct in all
         material respects on and as of the Closing Date with the same effects
         as if they had been made on and as of the Closing Date (except as to
         any changes resulting from transactions expressly reflected herein or
         contemplated hereby) and no Event of Default as defined in Section 10
         hereof, nor any condition or event which, after notice or lapse of
         time, or both, would constitute such an Event of Default, shall exist;
         and the Company shall deliver to you on the Closing Date a certificate
         of the President and the Treasurer of the Company to the foregoing
         effects.

                  (c) DOCUMENTS. All proceedings to be taken in connection with
         the transactions contemplated by this Agreement to be consummated at or
         prior to the Closing Date, and all documents incident thereto, shall be
         satisfactory in form and substance to the Placement Agent shall have
         received original counterparts or certified or other copies of all
         documents which you may have reasonably requested in connection with
         said transactions and of all corporate proceedings in connection
         therewith, in form and substance satisfactory to the Placement Agent.

                  (d) MINIMUM OFFERING. The Company shall have received
         commitments for the purchase of a minimum of $5,000,000 in Shares.

                  (e) NO MATERIAL ADVERSE CHANGE. As of the date of the Closing,
         no Material Adverse Change has occurred.

                  (f) REGISTRATION RIGHTS AGREEMENT. The Company shall have
         entered into the Registration Rights Agreement with the purchasers of
         the Shares in the form of Exhibit A hereto.

         6. COVENANTS OF THE COMPANY. The Company covenants and agrees that,
except otherwise agreed to by the Placement Agent in writing, as so long as any
of the Shares are outstanding it will comply with the following provisions,
subject to the provisions of Section 12 hereof;

         6.1. USE OF PROCEEDS. The Company will apply all of the proceeds (net
of costs directly related to the preparation and negotiation of this Agreement
and the offering and sale of the Shares) derived from the sale of the Shares for
general working capital purposes.

         6.2. TAXES. The Company will promptly pay and discharge all lawful
taxes, assessments, and governmental charges or levies imposed on it or upon its
income or profits, or upon any of its properties, real or personal, before the
same shall become in default, as well as all

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lawful claims for labor, materials, and supplies or otherwise which, if unpaid,
might become a lien or charge upon its properties or any part thereof, except
where the failure to do so would not have a Material Adverse Effect; provided,
however, that the Company shall not be required to pay or cause to be paid any
such tax, assessment, charge, levy or claim prior to institution of foreclosure
proceedings if the validity thereof shall be contested in good faith by
appropriate proceedings and if the Company shall have established reserves
deemed by the Company adequate with respect to such tax, assessment, charge,
levy, or claim.

         6.3. INSURANCE. The Company will maintain liability, property damage,
and insurance on its insurable property against fire and other hazards with
responsible insurance carriers in the relative proportionate amounts consistent
with the Company's past practice and usually carried by reasonable and prudent
companies conducting businesses similar to that of the Company except where the
failure to do so would not have a Material Adverse Effect.

         6.4. MAINTENANCE OF EXISTENCE AND PROPERTIES. The Company will keep its
corporate existence, rights, and franchises in full force and effect. The
Company will comply with all applicable laws and regulations, decrees, orders,
judgments, licenses and permits ("Applicable Laws"), except where noncompliance
with such Applicable Laws would not have a Material Adverse Effect on the
Company.

         6.5. FINANCIAL STATEMENTS AND COMPLIANCE CERTIFICATES. The Company will
keep true books of record and account in which full, true and correct entries in
accordance with generally accepted accounting principles will be made of all
dealings or transactions in relation to its business and activities. For a
period of three years after the Closing Date, the Company shall furnish:

                  (a) to the Placement Agent, as soon as available and in any
         event within 47 days after the close of each fiscal quarter (except the
         last fiscal quarter of each fiscal year of the Company), commencing
         with the fiscal quarter ending March 31, 2000, a consolidated balance
         sheet of the Company as of the end of such quarter and consolidated
         statements of operations and cash flows of the Company for such quarter
         and for the expired portion of the then current fiscal year, setting
         forth comparable figures for the same quarter and expired portion of
         the previous fiscal year, and prepared and certified by the Chief
         Financial Officer of the Company, subject to year-end audit adjustment;

                  (b) to each holder of the Shares and the Placement Agent, as
         soon as available and in any event within 107 days after the close of
         each fiscal year of the Company, a balance sheet of the Company as of
         the end of such fiscal year and consolidated statements of operations,
         stockholders' equity, and cash flows of the Company for such fiscal
         year, setting forth comparable figures for the previous fiscal year,
         all reported upon, and certified, by independent certified public
         accountants of nationally recognized standing;

                  (c) with each financial statement required to be delivered
         pursuant to the provisions of paragraph (b) above, a certificate of the
         Chief Financial Officer of the Company stating that to the best of his
         knowledge there does not exist any Event of Default or any condition or
         event which after notice or lapse of time, or both, would constitute an
         Event of Default, or specifying the nature and period of existence of
         each such Event of Default, condition or event and the action the
         Company is taking or proposed to take with respect thereto; and

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                  (d) to the Placement Agent, promptly upon transmission
         thereof, copies of all financial statements and reports sent by the
         Company to its shareholders and of all regular and periodic reports, if
         any, filed by it with the Commission pursuant to any statute
         administered by the Commission.

Except as and to the extent required by law or by any regulatory authority
having jurisdiction over you, and except for disclosures to prospective
transferees of any of your Shares, you will not willfully disclose to others
information obtained from any such inspection or discussion which the Company
advises you is confidential in nature.

         7. REGISTRATION AND TRANSFER OF SHARES. The Company agrees to maintain
an office (or to appoint an agent having an office) in Dallas, Texas, or such
other city as the Company may designate by notice in writing to you, at which
Shares may be surrendered for transfer and reissuance, for exchange,
replacement, conversion, or cancellation. The Company shall keep or cause to be
kept, at the office or agency so maintained, a register or registers in which
the Company or its agent shall register the names and addresses of the holders
of the Shares and shall transfer registered Shares in accordance with this
Agreement. Upon surrender for transfer of any registered Shares duly assigned by
the registered holder (or its duly authorized attorney) to the transferee(s)
thereof and subject to satisfaction of the requirements set forth in Section 9.4
hereof if such Shares are then Restricted Shares, the Company shall execute and
deliver a new registered certificates for the Shares. No service charge shall be
assessed for any transfer, registration, reissuance, exchange, conversion, or
notation of payment hereunder.

         8. SUBSTITUTION OF SHARE CERTIFICATE. Upon receipt by the Company of
evidence satisfactory to it of the loss, theft, destruction, or mutilation of
any certificate for Shares, and of indemnity satisfactory to it (which, in the
case of any original purchaser of the Shares, shall be a contractual obligation
of such purchaser) and upon surrender, at the office or agency maintained in
accordance with Section 8 hereof, and cancellation of any Shares, if mutilated,
the Company will execute and deliver a new certificate of like tenor, in lieu of
such certificate.

         9. SECURITIES ACT.

         9.1. INVESTMENT INTENT, ETC. Each of you and each other Person who has
been designated by you as a registered holder to whom Shares will be initially
issued on the Closing Date, by acceptance of such Shares, represent and in
making this sale it is specifically understood and agreed that you and each such
other Person are (i) "accredited investors" as defined in Rule 502 of Regulation
D under the Securities Act, and (ii) acquiring the Shares to be purchased for
your, or such Person's, own account, and not with a view to or for sale in
connection with any distribution thereof, provided that the disposition of your,
or such Person's, property shall at all times be and remain within your, or such
Person's, control.

         9.2. RESTRICTIONS ON TRANSFERABILITY. The Shares shall not be
transferable except upon the conditions specified in this Section 9, which
conditions are intended to ensure compliance with the provisions of the
Securities Act in respect of the transfer of any Security.

         9.3. RESTRICTIVE LEGENDS. Each certificate for Common Stock and each
certificate for Common Stock issued to a subsequent transferee shall (unless
otherwise permitted by the

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provisions of Section 9.4 hereof) be stamped or otherwise imprinted with a
legend in substantially the following form:

                  "The securities represented by this certificate have not been
         registered under the Securities Act of 1933 or any state securities
         act. The shares have been acquired for investment and may not be sold,
         transferred, pledged or hypothecated unless (i) they shall have been
         registered under the Securities Act of 1933 and any applicable state
         securities act, or (ii) the corporation shall have been furnished with
         an opinion of counsel, satisfactory to counsel for the corporation,
         that registration is not required under any such acts."

         9.4. NOTICE OF PROPOSED TRANSFERS. Except as otherwise provided in
paragraph (b) of this Section 9.4, prior to any transfer or attempted transfer
of any Restricted Stock, the holder thereof shall give written notice to the
Company of such holder's intention to effect such transfer. Each such notice
shall describe the manner and circumstances of the proposed transfer and shall
be accompanied by an opinion of counsel for such holder satisfactory to the
Company, to the effect that such transfer may be effected without registration
of such Restricted Stock, under the Securities Act. If such notice is
accompanied by such an opinion, such holder shall be entitled to transfer such
security in conformity with the terms of such notice, and, if the opinion of
counsel so specifies, the securities issued upon any such transfer shall not
bear the restrictive legend set forth in Section 9.3.

         10.  EVENTS  OF  DEFAULT.  If any  one or more  of  the  following
events  (herein  called "Events   of   Default")   shall   occur   and  be
continuing:

                  (a) default shall be made in the due performance or observance
         of any other material covenant, agreement, or provision herein to be
         performed or observed by the Company or a breach shall exist in any
         material representation or warranty herein contained, and such default
         or breach is material and shall have continued for a period of 90 days
         after written notice thereof to the Company from any holder or holders
         of Shares aggregating not less than 5% of the aggregate number of the
         Shares then outstanding;

                  (b) the Company shall (i) apply for or consent to the
         appointment of a receiver, trustee, or liquidator of the Company or any
         of its assets, (ii) make a general assignment for the benefit of
         creditors, (iii) be adjudicated a bankrupt or insolvent or (iv) file a
         voluntary petition in bankruptcy, or a petition or answer seeking
         reorganization to take advantage of any bankruptcy, reorganization,
         insolvency, moratorium, dissolution, liquidation, or debtor relief law,
         or any chapter of any such law, or an answer admitting the material
         allegations of a petition filed against it in any proceeding under any
         such law or chapter, or corporate action shall be taken by the Company
         for the purpose of effecting any of the foregoing; or an order,
         judgment, or decree shall be entered, without the application,
         approval, or consent of the Company, by any court of competent
         jurisdiction, approving a petition seeking liquidation or
         reorganization of the Company or of all or a substantial part of the
         assets of the Company;

                  (c) default shall occur with respect to any indebtedness for
         borrowed money of the Company or under any agreement under which such
         indebtedness may be issued by the Company and such default shall
         continue for more than the period of grace, if any, therein specified,
         if the aggregate amount of all such indebtedness for which such default

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         shall have occurred exceeds $1,000,000 and, if not already matured in
         accordance with its terms, such default shall result in the
         acceleration of such indebtedness, and such default shall have
         continued for a period of 90 days after written notice thereof to the
         Company from any holder or holders of Shares aggregating not less than
         5% of the aggregate number of the Shares then outstanding; provided,
         however, that if such default shall be remedied or cured by the
         Company, or waived by the holders of such indebtedness, then the Event
         of Default hereunder by reason thereof shall be deemed likewise to have
         been thereupon remedied, cured, or waived without further action upon
         the part of and holders of the Shares; or

                  (d) final judgment for the payment of money in excess of
         $1,000,000 shall be rendered against the Company and the same shall
         remain undischarged for a period of 90 days during which execution
         shall not be effectively stayed by appeal, posting of a bond, or
         agreement of the parties thereto.

         11. DEFINITIONS.

         "Affiliates" of any Person shall mean any Person directly or indirectly
controlling, controlled by or under direct or indirect common control with such
Person. A Person shall be deemed to control a corporation if such Person
possesses, directly or indirectly, the power to direct or cause the direction of
the management and policies of such corporation, whether through the ownership
of voting securities, by contract or otherwise. Each director, executive
officer, and holder of 5% or more of and class of the outstanding voting
securities of the Company shall be deemed to be an "Affiliate" of the Company.

         "Business Day" shall mean any day that the New York Stock Exchange is
open for trading.

         "Closing" shall have the meaning given such term in Section 3 hereof.

         "Commission" shall mean the Securities and Exchange Commission, or any
other federal agency at the time administering the Securities Act.

         "Common Stock" shall mean the Company's Common Stock, $0.01 par value
per share.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

         "Exchange Act Documents" shall mean all reports and statements required
to be filed by the Company with the Securities and Exchange Commission under the
Exchange Act, together with all documents incorporated by reference therein or
attached as exhibits thereto.

         "Event of Default" shall have the meaning given such term in Section
10.

         "Form 10-K" shall mean the Company's Annual Report on Form 10-K for the
year ended December 31, 1999.

         "Governmental Body" shall mean any Federal, state, municipal, or other
governmental department, commission, board, bureau, agency or instrumentality,
domestic or foreign.

                                       10
<PAGE>   11

         "Material Adverse Change" shall mean any single circumstance or event
(or series of circumstances or events) having a Material Adverse Effect.

         "Material Adverse Effect" shall mean any material adverse effect on the
financial condition or business operations of the Company and its Subsidiaries,
taken as a whole.

         "Memorandum" shall mean the Confidential Offering Memorandum dated
April 19, 2000, with respect to the offering of the Shares.

         "Person" shall mean and include an individual, a partnership, a
corporation, a trust, a joint venture, an unincorporated organization, a
government or any department or agency thereof, and any other entity.

         "Placement Agent" shall mean Sanders Morris Harris, Inc., a Texas
corporation.

         "Restricted Stock" shall mean shares of Common Stock issued or issuable
pursuant to this Agreement and evidenced by a certificate bearing the
restrictive legend set forth in Section 9.3 hereof.

         "SEC" shall mean the Securities and Exchange Commission.

         "Shares" shall mean the shares of Common Stock issued or issuable
pursuant to this Agreement.

         "Securities Act" shall mean the Securities Act of 1933, as amended, or
any similar federal statute, and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.

         "Stock Purchase Price" shall mean the lesser of (i) $5.00 per share or
(ii) 80% of the average closing price for shares of the Common Stock on the New
York Stock Exchange for the 20 Trading Days prior to Closing.

         "Subsidiary" shall mean any Person of which at the time of
determination the Company and/or one or more Subsidiaries owns or controls
directly or indirectly more than 50% of the shares of voting stock of such
Person.

         "Trading Day" shall mean a day that the New York Stock Exchange is open
for trading.

         12. WAIVERS; MODIFICATIONS OF AGREEMENT. Any provision in this
Agreement to the contrary notwithstanding, changes in or additions to this
Agreement may be made, and compliance with any covenant or condition herein set
forth may be omitted, if the Company (a) shall obtain from the holders of record
of Shares aggregating not less than 66-2/3% of the number of the Shares at the
time outstanding their consent thereto in writing and (b) shall deliver copies
of such consent in writing to any such holders of record who did not execute the
same; provided, however, that without the consent in writing of all holder of
the Shares purchased pursuant to this Agreement, no such consent shall reduce
the percentage of the number of the Shares the consent of the holders of which
shall be required under this Section 12.

                                       11
<PAGE>   12

         13. SURVIVAL OF COVENANTS, ETC. All covenants, agreements,
representations, and warranties made herein and in any certificate delivered
pursuant hereto shall survive any investigation made by you and the execution
and delivery to you of the Shares to be purchased by you and your payment
therefor and continue for two years.

         14. BROKERS; ISSUANCE TAXES. The Company will hold you free and
harmless from any claim, demand, liability for, or expense in connection with,
any brokers' or finders' fees or commissions claimed by any Person acting on
behalf of the Company in connection with this Agreement or the transactions
contemplated herein and taxes (excluding federal income taxes), if any, payable
upon, or on account of, issuance of the Shares.

         15. GOVERNING LAW. This Agreement and the Shares are being delivered in
the State of Texas and shall be governed by and construed according to the laws
of the State of Texas.

         16. NOTICES. Any notice, consent, request, or other communication
required or permitted hereunder shall be in writing and shall be deemed given
when either (a) personally delivered to the intended recipient or (b) sent and
delivered, by certified or registered mail, return-receipt requested, addressed
to the intended recipient as follows:

         if to the Company, to               Tyler Technologies, Inc.
                                             2800 West Mockingbird Lane
                                             Dallas, Texas 75235
                                             Attention: Theodore Bathurst;

         if to any of you, to                Sanders Morris Harris
                                             3100 Chase Tower
                                             Houston, Texas 77002

                                             Attention: Charles L. Davis

; if to any other holder of Shares to the address of such holder set forth on
Schedule 1 or given to the Company in accordance with Section 9; and if to any
other holder of Restricted Stock, to the address of such holder as set forth in
the stock transfer records of the Company. Any Person (other than the Company)
may change the address to which notice is to be sent pursuant to the preceding
sentence by giving written notice of such new address to the Company in
accordance with this Section 16. The Company may change the address to which
notice is to be sent hereunder by giving notice of such change, in accordance
with this Section 16, to each Person against whom such change shall be
effective. Any notice mailed as aforesaid shall, unless otherwise provided
herein, be deemed given on the fifth day after deposited in the United States
mail in accordance with the first sentence of this Section 16.

         Each of the Purchasers hereby appoints Sanders Morris Harris Inc. as
his, her, or its representative and agent to whom all communications to such
Shareholders may be directed.

         17. PARTIES IN INTEREST. All of the terms and provisions of this
Agreement shall bind and inure to the benefit of the parties hereto and their
respective successors and assigns, except that the Company may not assign or
transfer any of its or your rights or obligations under this Agreement without
your prior written consent and you may not assign or transfer any of

                                       12
<PAGE>   13

your rights or obligations under this Agreement without the prior written
consent of the Company.

         18. HEADINGS. The headings of the various sections and subsections
hereof have been inserted for convenience of reference only and shall not be
deemed to in any way modify any of the terms or provisions hereof.

         19. COUNTERPARTS. This Agreement may be signed by each party hereto
upon a separate copy, in which event all of said copies shall constitute a
single counterpart of this Agreement. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original, and it shall not
be necessary in making proof of this Agreement to produce or account for more
than one such counterpart.

         If the foregoing is in accordance with your understanding, please sign
the form of confirmation and acceptance on the enclosed counterpart of this
Agreement and return the same to the company, whereupon this Agreement shall be
a binding agreement between you and the Company.

                                        Very truly yours,

                                        TYLER TECHNOLOGIES, INC.

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

The foregoing Agreement is confirmed and
accepted as of the date first above written.

SANDERS MORRIS HARRIS INC.,
as agent and attorney-in-fact for the
Purchasers listed on Schedule 1

By
  -------------------------------------------
     Charles L. Davis, Managing Director

                                       13
<PAGE>   14

                                   SCHEDULE 1

              Schedule of Purchasers

<TABLE>
<CAPTION>

   Registered Owner/Address            Purchase Price      Shares of Common Stock
   ------------------------            --------------      ----------------------
<S>                                    <C>                 <C>

</TABLE>

                                       14

<PAGE>   15

                                                                   SCHEDULE 4.11

                         Outstanding Registration Rights

                                       15<PAGE>   1
                                                                     EXHIBIT 4.5

THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE (COLLECTIVELY, THE "ACTS"). NEITHER
THIS WARRANT NOR ANY INTEREST THEREIN MAY BE OFFERED, SOLD, TRANSFERRED, PLEDGED
OR OTHERWISE DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT
WITH RESPECT HERETO UNDER ALL OF THE APPLICABLE ACTS, OR AN OPINION OF COUNSEL
SATISFACTORY TO TYLER TECHNOLOGIES, INC. TO THE EFFECT THAT SUCH REGISTRATIONS
ARE NOT REQUIRED.

                                     WARRANT

                           to Purchase Common Stock of

                            TYLER TECHNOLOGIES, INC.

                            Expiring on May 19, 2005

         THIS IS TO CERTIFY THAT, for value received, SANDERS MORRIS HARRIS
INC., a Texas corporation, or permitted assigns, is entitled to purchase from
TYLER TECHNOLOGIES, INC., a Delaware corporation (the "Company"), at the place
where the Warrant Office designated pursuant to Section 2.1 is located, at a
purchase price per share of $3.60 (as adjusted pursuant to the terms of this
Warrant, the "Exercise Price"), 333,380 shares of duly authorized, validly
issued, fully paid and nonassessable shares of Common Stock, $.01 par value, of
the Company (the "Common Stock"), and is entitled also to exercise the other
appurtenant rights, powers and privileges hereinafter set forth. The number of
shares of the Common Stock purchasable hereunder and the Exercise Price are
subject to adjustment in accordance with Article III hereof. This Warrant shall
expire at 5:00 p.m., C.S.T., on May 19, 2005.

         Certain Terms used in this Warrant are defined in Article IV.

                                    ARTICLE I

                               Exercise of Warrant

         1.1 Method of Exercise. This Warrant may be exercised as a whole or in
part from time to time until May 19, 2005, at which time this Warrant shall
expire and be of no further force or effect; provided, however, that the minimum
number of Warrant Shares that may be purchased on a single exercise shall be
20,000. To exercise this Warrant, the holder hereof or permitted assignees of
all rights of the registered owner hereof shall deliver to the Company, at the
Warrant Office designated in Section 2.1, (a) a written notice in the form of
the Subscription Notice attached as an exhibit hereto, stating

<PAGE>   2

therein the election of such holder or such permitted assignees of the holder to
exercise this Warrant in the manner provided in the Subscription Notice, (b)
payment in full of the Exercise Price (in the manner described below) for all
Warrant Shares purchased hereunder, and (c) this Warrant. Subject to compliance
with Section 3.1(a)(vi), this Warrant shall be deemed to be exercised on the
date of receipt by the Company of the Subscription Notice, accompanied by
payment for the Warrant Shares and surrender of this Warrant, as aforesaid, and
such date is referred to herein as the "Exercise Date." Upon such exercise
(subject as aforesaid), the Company shall issue and deliver to such holder a
certificate for the full number of the Warrant Shares purchasable by such holder
hereunder, against the receipt by the Company of the total Exercise Price
payable hereunder for all the Warrant Shares, (a) in cash or by certified or
cashier's check or (b) if the Common Stock is registered under the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), by surrendering Warrant
Shares having a Current Market Price equal to the Exercise Price for all the
Warrant Shares, so purchased. The Person in whose name the certificate(s) for
Common Stock is to be issued shall be deemed to have become a holder of record
of such Common Stock on the Exercise Date.

         1.2 Net Exercise. Notwithstanding any provisions herein to the
contrary, if the Common Stock is registered under the Exchange Act, and the
Current Market Value of one share of Common Stock is greater than the Exercise
Price (at the date of calculation as set forth below), in lieu of exercising
this Warrant by payment of cash, the holder may elect to receive shares equal to
the value (as determined below) of this Warrant (or the portion thereof being
canceled) by surrender of this Warrant at the Warrant Office together with the
properly endorsed Subscription Notice in which event the Company shall issue the
holder a number of shares of Common Stock computed as follows:

                                  X = Y(A-B)
                                      ------
                                        A

Where:            X =  the number of shares of Common Stock to be issued to the
                       holder.
                  Y =  the number of shares of Common Stock purchasable under
                       the Warrant or, if only a portion of the Warrant is being
                       exercised, the portion of the Warrant being canceled (at
                       the date of such calculation)
                  A =  the Current Market Value of one share of Common Stock (at
                       the date of such calculation)
                  B =  Exercise Price (as adjusted to the date of such
                       calculation)

1.3               Fractional Shares. In lieu of any fractional shares of Common
                  Stock which would otherwise be issuable upon exercise of this
                  Warrant, the Company shall issue a certificate for the next
                  lower number of whole shares of Common Stock for any fraction
                  of a share which is one-half or greater. No shares will be
                  issued for less than one-half a share.

                                       2
<PAGE>   3

                                   ARTICLE II

                            Warrant Office; Transfer

         2.1 Warrant Office. The Company shall maintain an office for certain
purposes specified herein (the "Warrant Office"), which office shall initially
be the Company's office at 2800 West Mockingbird Lane, Dallas, Texas 75235, and
may subsequently be such other office of the Company or of any transfer agent of
the Common Stock in the continental United States as to which written notice has
previously been given to the holder of this Warrant. The Company shall maintain,
at the Warrant Office, a register for the Warrant, in which the Company shall
record the name and address of the person in whose name this Warrant has been
issued, as well as the name and address of each permitted assignee of the rights
of the registered owner hereof.

         2.2 Ownership of Warrant. The Company may deem and treat the person in
whose name this Warrant is registered as the holder and owner hereof
(notwithstanding any notations of ownership or writing hereon made by anyone
other than the Company) for all purposes and shall not be affected by any notice
to the contrary, until presentation of this Warrant for registration of transfer
as provided in this Article II.

         2.3 Transfer of Warrants. The Company agrees to maintain at the Warrant
Office books for the registration and transfer of this Warrant. This Warrant may
be transferred in whole or in part only in compliance with the applicable law
and only to shareholders, officers, and employees of Sanders Morris Harris Inc.
or to any person who succeeds to all of the assets of Sanders Morris Harris Inc.
The Company, from time to time, shall register the transfer of this Warrant in
such books upon surrender of this Warrant at the Warrant Office properly
endorsed or accompanied by appropriate instruments of transfer and written
instructions for transfer satisfactory to the Company. Upon any such transfer, a
new Warrant shall be issued to the transferee and the surrendered Warrant shall
be canceled by the Company. The registered holder of this Warrant shall pay all
taxes and all other expenses and charges payable in connection with the transfer
of Warrants pursuant to this Section 2.3.

         2.4 Registration Rights. The registered holder of this Warrant shall be
entitled to all of the rights and benefits of a Stockholder under the
Registration Rights Agreement dated May 18, 2000 (the "Registration Rights
Agreement"), between the Company and the certain holders of the Common Stock.
The Warrant Shares shall be considered Registrable Securities under the
Registration Rights Agreement. The terms of the Registration Rights Agreement
are hereby incorporated by reference for all purposes and shall be considered a
part of this Agreement as if they had been fully set forth herein.

         2.5 Acknowledgment of Rights. The Company will, at the time of the
exercise of this Warrant in accordance with the terms hereof, upon the request
of the registered holder hereof, acknowledge in writing its continuing
obligation to afford to such holder any rights (including without limitation,
any right to registration of the Warrant Shares) to which such holder shall
continue to be entitled after such exercise in

                                       3
<PAGE>   4

accordance with the provisions of this Warrant, provided that if the holder of
this Warrant shall fail to make any such request, such failure shall not affect
the continuing obligation of the Company to afford to such holder any such
rights.

         2.6 Expenses of Delivery of Warrants. The Company shall pay all
reasonable expenses, taxes (other than transfer taxes) and other charges payable
in connection with the preparation, issuance and delivery of Warrants and
related Warrant Shares hereunder.

         2.7 Compliance with Securities Laws. The holder hereof understands and
agrees that the following restrictions and limitations shall be applicable to
all Warrant Shares and resales or other transfers of such Shares pursuant to the
Securities Act:

         (a) The holder hereof agrees that the Warrant Shares shall not be sold
or otherwise transferred unless the Warrant Shares are registered under the
Securities Act and state securities laws or are exempt therefrom.

         (b) A legend in substantially the following form has been or will be
placed on the certificate(s) evidencing the Warrant Shares:

                  "The shares represented by this certificate have not been
         registered under the Securities Act of 1933, as amended, or the
         securities laws of any state (collectively, the "Acts"). Neither the
         shares nor any interest therein may be offered, sold, transferred,
         pledged, or otherwise disposed of in the absence of an effective
         registration statement with respect to the shares under all of the
         applicable Acts, or an opinion of counsel satisfactory to Tyler
         Technologies, Inc. to the effect that such registrations are not
         required."

         (c) Stop transfer instructions have been or will be imposed with
respect to the Warrant Shares so as to restrict resale or other transfer
thereof, subject to this Section 2.7.

                                   ARTICLE III

                            Anti-Dilution Provisions

         3.1 Adjustment of Exercise Price and Number of Warrant Shares. The
Exercise Price shall be subject to adjustment from time to time as hereinafter
provided in this Article III. Upon each adjustment of the Exercise Price, except
pursuant to 3.1(a)(iii), (iv), and (v) the registered holder of the Warrant
shall thereafter be entitled to purchase, at the Exercise Price resulting from
such adjustment, the number of shares of the Common Stock (calculated to the
nearest whole share pursuant to Section 1.2) obtained by multiplying the
Exercise Price in effect immediately prior to such adjustment by the number of
shares of the Common Stock purchasable pursuant hereto immediately prior to such
adjustment and dividing the product thereof by the Exercise Price resulting from
such adjustment.

                                       4
<PAGE>   5

         (a) Exercise Price Adjustments. The Exercise Price shall be subject to
adjustment from time to time as follows:

                  (i) Adjustment for Stock Splits and Combinations. If the
         Company shall at any time or from time to time after the date hereof
         (the "Original Issue Date") effect a subdivision of the outstanding
         Common Stock, the Exercise Price in effect immediately before that
         subdivision shall be proportionately decreased. Conversely, if the
         Company shall at any time or from time to time after the Original Issue
         Date combine the outstanding shares of Common Stock into a smaller
         number of shares, the Exercise Price in effect immediately before the
         combination shall be proportionately increased. Any adjustment under
         this Section 3.1(a)(i) shall become effective at the close of business
         on the date the subdivision or combination becomes effective.

                  (ii) Adjustment for Common Stock Dividends and Distributions.
         If the Company at any time or from time to time after the Original
         Issue Date makes, or fixes a record date for the determination of
         holders of Common Stock entitled to receive, a dividend or other
         distribution payable in additional shares of Common Stock, in each such
         event the Exercise Price that is then in effect shall be decreased as
         of the time of such issuance or, in the event such record date is
         fixed, as of the close of business on such record date, by multiplying
         the Exercise Price then in effect by a fraction (i) the numerator of
         which is the total number of shares of Common Stock issued and
         outstanding immediately prior to the time of such issuance or the close
         of business on such record date, and (ii) the denominator of which is
         the total number of shares of Common Stock issued and outstanding
         immediately prior to the time of such issuance or the close of business
         on such record date plus the number of shares of Common Stock issuable
         in payment of such dividend or distribution; provided, however, that if
         such record date is fixed and such dividend is not fully paid or if
         such distribution is not fully made on the date fixed therefor, the
         Exercise Price shall be recomputed accordingly as of the close of
         business on such record date and thereafter the Exercise Price shall be
         adjusted pursuant to this Section 4f to reflect the actual payment of
         such dividend or distribution.

                  (iii) Adjustment for Reclassification, Exchange and
         Substitution. If at any time or from time to time after the Original
         Issue Date, the Common Stock is changed into the same or a different
         number of shares of any class or classes of stock, whether by
         recapitalization, reclassification or otherwise (other than an
         Acquisition or Asset Transfer or a subdivision or combination of shares
         or stock dividend or a reorganization, merger, consolidation or sale of
         assets provided for elsewhere in this Section 3.1(a)), in any such
         event the holder hereof shall have the right thereafter to convert such
         stock into the kind and amount of stock and other securities and
         property receivable upon such recapitalization, reclassification or
         other change by holders of the maximum number of shares of Common Stock
         into which such shares of Common Stock could have been converted
         immediately prior to such recapitalization, reclassification or change,

                                       5
<PAGE>   6

         all subject to further adjustment as provided herein or with respect to
         such other securities or property by the terms thereof.

                  (iv) Reorganizations, Mergers, Consolidations or Sales of
         Assets. If at any time or from time to time after the Original Issue
         Date, there is a capital reorganization of the Common Stock (other than
         an Acquisition or Asset Transfer or a recapitalization, subdivision,
         combination, reclassification, exchange or substitution of shares
         provided for elsewhere in this Section 3.1(a) , as a part of such
         capital reorganization, provision shall be made so that the holder of
         this Warrant shall thereafter be entitled to receive upon exercise
         hereof the number of shares of stock or other securities or property of
         the Company to which a holder of the number of shares of Common Stock
         deliverable upon exercise would have been entitled on such capital
         reorganization, subject to adjustment in respect of such stock or
         securities by the terms thereof. In any such case, appropriate
         adjustment shall be made in the application of the provisions of this
         Section 3(a) with respect to the rights of the holder hereof after the
         capital reorganization to the end that the provisions of this Section
         3.1(a) (including adjustment of the Exercise Price then in effect and
         the number of shares issuable upon exercise) shall be applicable after
         that event and be as nearly equivalent as practicable.

                  (v) Sale of Shares Below Exercise Price.

                  (A) If at any time or from time to time prior to January 1,
         2001, the Company issues or sells, or is deemed by the express
         provisions of this subsection (v) to have issued or sold, Additional
         Shares of Common Stock, other than as a dividend or other distribution
         on any class of stock as provided in Section 3.1(a)(ii) above, and
         other than a subdivision or combination of shares of Common Stock as
         provided in Section 3.1(a)(i) above, for an Effective Price less than
         the then effective Exercise Price, then and in each such case the then
         existing Exercise Price shall be reduced, as of the opening of business
         on the date of such issue or sale, to the price at which such
         Additional Shares of Common Stock are issued.

                  (B) If at any time or from time to time on or after January 1,
         2001, the Company issues or sells, or is deemed by the express
         provisions of this subsection (v) to have issued or sold, Additional
         Shares of Common Stock, other than as a dividend or other distribution
         on any class of stock as provided in Section 3.1(a)(ii) above, and
         other than a subdivision or combination of shares of Common Stock as
         provided in Section 3.1(a)(i) above, for an Effective Price less than
         the then effective Exercise Price, then and in each such case the then
         existing Exercise Price shall be reduced, as of the opening of business
         on the date of such issue or sale, to a price determined by multiplying
         the Exercise Price by a fraction (i) the numerator of which shall be
         (A) the number of shares of Common Stock outstanding immediately prior
         to such issue or sale, plus (B) the number of shares of Common Stock
         which the aggregate consideration received (as defined in subsection
         (v)(C)) by the Company for the total number of Additional Shares of

                                       6
<PAGE>   7

         Common Stock so issued would purchase at such Exercise Price, and (ii)
         the denominator of which shall be the number of shares of Common Stock
         outstanding immediately prior to such issue or sale plus the total
         number of Additional Shares of Common Stock so issued.

                  (C) For the purpose of making any adjustment required under
         this Section 3.1(a)(v), the consideration received by the Company for
         any issue or sale of securities shall (1) to the extent it consists of
         cash, be computed at the net amount of cash received by the Company
         after deduction of any underwriting or similar commissions,
         compensation or concessions paid or allowed by the Company in
         connection with such issue or sale but without deduction of any
         expenses payable by the Company, (2) to the extent it consists of
         property other than cash, be computed at the fair value of that
         property as determined in good faith by the Board of Directors, and (3)
         if Additional Shares of Common Stock, Convertible Securities, or rights
         or options to purchase either Additional Shares of Common Stock or
         Convertible Securities are issued or sold together with other stock or
         securities or other assets of the Company for a consideration which
         covers both, be computed as the portion of the consideration so
         received that may be reasonably determined in good faith by the Board
         of Directors to be allocable to such Additional Shares of Common Stock,
         Convertible Securities, or rights or options.

                  (D) For the purpose of the adjustment required under this
         Section 3(a)(v), if the Company issues or sells (i) stock or other
         securities convertible into, Additional Shares of Common Stock (such
         convertible stock or securities being herein referred to as
         "Convertible Securities") or (ii) rights or options for the purchase of
         Additional Shares of Common Stock or Convertible Securities and if the
         Effective Price of such Additional Shares of Common Stock is less than
         the Exercise Price, in each case the Company shall be deemed to have
         issued at the time of the issuance of such rights or options or
         Convertible Securities the maximum number of Additional Shares of
         Common Stock issuable upon exercise or conversion thereof and to have
         received as consideration for the issuance of such shares an amount
         equal to the total amount of the consideration, if any, received by the
         Company for the issuance of such rights or options or Convertible
         Securities, plus, in the case of such rights or options, the minimum
         amounts of consideration, if any, payable to the Company upon the
         exercise of such rights or options, plus, in the case of Convertible
         Securities, the minimum amounts of consideration, if any, payable to
         the Company (other than by cancellation of liabilities or obligations
         evidenced by such Convertible Securities) upon the conversion thereof;
         provided, however, that if in the case of Convertible Securities the
         minimum amounts of such consideration cannot be ascertained, but are a
         function of antidilution or similar protective clauses, the Company
         shall be deemed to have received the minimum amounts of consideration
         without reference to such clauses; provided further that if the minimum
         amount of consideration payable to the Company upon the exercise or
         conversion of rights, options or Convertible Securities is reduced over
         time or on the occurrence or

                                       7
<PAGE>   8

         non-occurrence of specified events other than by reason of antidilution
         adjustments, the Effective Price shall be recalculated using the figure
         to which such minimum amount of consideration is reduced; provided
         further that if the minimum amount of consideration payable to the
         Company upon the exercise or conversion of such rights, options or
         Convertible Securities is subsequently increased, the Effective Price
         shall be again recalculated using the increased minimum amount of
         consideration payable to the Company upon the exercise or conversion of
         such rights, options or Convertible Securities. No further adjustment
         of the Exercise Price, as adjusted upon the issuance of such rights,
         options or Convertible Securities, shall be made as a result of the
         actual issuance of Additional Shares of Common Stock on the exercise of
         any such rights or options or the conversion of any such Convertible
         Securities. If any such rights or options or the conversion privilege
         represented by any such Convertible Securities shall expire without
         having been exercised, the Exercise Price as adjusted upon the issuance
         of such rights, options or Convertible Securities shall be readjusted
         to the Exercise Price which would have been in effect had an adjustment
         been made on the basis that the only Additional Shares of Common Stock
         so issued were the Additional Shares of Common Stock, if any, actually
         issued or sold on the exercise of such rights or options or rights of
         conversion of such Convertible Securities, and such Additional Shares
         of Common Stock, if any, were issued or sold for the consideration
         actually received by the Company upon such exercise, plus the
         consideration, if any, actually received by the Company for the
         granting of all such rights or options, whether or not exercised, plus
         the consideration received for issuing or selling the Convertible
         Securities actually converted, plus the consideration, if any, actually
         received by the Company (other than by cancellation of liabilities or
         obligations evidenced by such Convertible Securities) on the conversion
         of such Convertible Securities, provided that such readjustment shall
         not apply to prior exercises of this Warrant.

                  (E) "Additional Shares of Common Stock" means all shares of
         Common Stock issued by the Company or deemed to be issued pursuant to
         Section 3.1(a)(v), whether or not subsequently reacquired or retired by
         the Company other than (1) shares of Common Stock issued upon exercise
         of this Warrant; (2) shares of Common Stock and/or options, warrants or
         other Common Stock purchase rights, and the Common Stock issued
         pursuant to such options, warrants or other rights (as adjusted for any
         stock dividends, combinations, splits, recapitalizations and the like)
         after the Original Issue Date to employees, officers or directors of,
         or consultants or advisors to the Company or any subsidiary pursuant to
         the Company's and its predecessor's stock incentive plans or other
         arrangements that are approved by the Board; (3) shares of Common Stock
         issued pursuant to the exercise of options, warrants or convertible
         securities outstanding as of the Original Issue Date; (4) shares of
         Common Stock issued pursuant to a stock split, combination, dividend or
         distribution pursuant to (3).1(a)(i) and 3.1(a)(ii); (5) shares of
         Common Stock issued for consideration other than cash pursuant to a
         merger, consolidation, acquisition or similar business combination; (6)
         shares of Common Stock issued to equipment lessors or financial
         institutions

                                       8
<PAGE>   9

         in connection with debt, equipment or lease financings, or other
         transactions approved by the Board of Directors; and (7) shares of
         Common Stock issued for any other corporate purpose; provided, however,
         that the aggregate number of shares of Common Stock issued pursuant to
         clauses (2) and (7) may not exceed 20% of the shares of Common Stock of
         the Company then outstanding. The "Effective Price" of Additional
         Shares of Common Stock shall mean the quotient determined by dividing
         the total number of Additional Shares of Common Stock issued or sold,
         or deemed to have been issued or sold by the Company under this Section
         3.1(a)(v), into the aggregate consideration received, or deemed to have
         been received by the Company for such issue under this Section
         3.1(a)(v), for such Additional Shares of Common Stock.

                  (vi) Rounding of Calculations; Minimum Adjustment. All
         calculations under this Section 3.1(a) and under Section 3.1(b) shall
         be made to the nearest cent or to the nearest whole share (as provided
         in Section 1.2) share, as the case may be. Any provision of this
         Section 3.1 to the contrary notwithstanding, no adjustment in the
         Exercise Price shall be made if the amount of such adjustment would be
         less than one percent, but any such amount shall be carried forward and
         an adjustment with respect thereto shall be made at the time of and
         together with any subsequent adjustment which, together with such
         amount and any other amount or amounts so carried forward, shall
         aggregate one percent or more.

                  (vii) Timing of Issuance of Additional Common Stock Upon
         Certain Adjustments. In any case in which the provisions of this
         Section 3.1(a) shall require that an adjustment shall become effective
         immediately after a record date for an event, the Company may defer
         until the occurrence of such event issuing to the holder of this
         Warrant after such record date and before the occurrence of such event
         the additional shares of Common Stock or other property issuable or
         deliverable upon exercise by reason of the adjustment required by such
         event over and above the shares of Common Stock or other property
         issuable or deliverable upon such exercise before giving effect to such
         adjustment; provided, however, that the Company upon request shall
         deliver to such holder a due bill or other appropriate instrument
         evidencing such holder's right to receive such additional shares or
         other property, and such cash, upon the occurrence of the event
         requiring such adjustment.

         (b) Current Market Price. The "Current Market Price" shall mean, as of
any date, the average, of either: (i) the high and low sales prices of the
Common Stock on such Trading Day as reported on the composite tape for the
principal national securities exchange on which the Common Stock may then be
listed, or (ii) if the Common Stock shall not be so listed on any such Trading
Day, the high and low sales prices of Common Stock in the over-the-counter
market as reported by the Nasdaq National Market, or (iii) if the Common Shares
shall not be included in the Nasdaq National Market on any such Trading Day, the
representative bid and asked prices at the end of such Trading Day in such
market as reported by the Nasdaq Stock Market or (iv) if there be no such
representative prices reported by the Nasdaq Stock Market, the lowest bid and
highest

                                       9
<PAGE>   10

asked prices at the end of such Trading Day in the over-the-counter market as
reported by the OTC Electronic Bulletin Board or National Quotation Bureau,
Inc., or any successor organization. For purposes of determining Current Market
Price, the term "Trading Day" shall mean a day on which an amount greater than
zero can be calculated with respect to the Common Stock under any one or more of
the foregoing categories (i), (ii), (iii) and (iv), and the "end" thereof, for
the purposes of categories (iii) and (iv), shall mean the exact time at which
trading shall end on the New York Stock Exchange. If the Current Market Price
cannot be determined under any of the foregoing methods, Current Market Price
shall mean the fair value per share of Common Stock on such date determined by
the Board of Directors in good faith, irrespective of any accounting treatment.

         (c) Statement Regarding Adjustments. Whenever the Exercise Price shall
be adjusted as provided in Section 3.1(a), and upon each change in the number of
shares of the Common Stock issuable upon exercise of this Warrant, the Company
shall forthwith file, at the office of any transfer agent for this Warrant and
at the principal office of the Company, a statement showing in detail the facts
requiring such adjustment and the Exercise Price and new number of shares
issuable that shall be in effect after such adjustment, and the Company shall
also cause a copy of such statement to be given to the holder of this Warrant.
Each such statement shall be signed by the Company's chief financial or
accounting officer. Where appropriate, such copy may be given in advance and may
be included as part of a notice required to be mailed under the provisions of
Section 3.1(d).

         (d) Notice to Holders. In the event the Company shall propose to take
any action of the type described in clause (iii), (iv), or (v) of Section
3.1(a), the Company shall give notice to the holder of this Warrant, in the
manner set forth in Section 6.6, which notice shall specify the record date, if
any, with respect to any such action and the approximate date on which such
action is to take place. Such notice shall also set forth such facts with
respect thereto as shall be reasonably necessary to indicate the effect of such
action (to the extent such effect may be known at the date of such notice) on
the Exercise Price and the number, kind or class of shares or other securities
or property which shall be deliverable upon exercise of this Warrant. In the
case of any action which would require the fixing of a record date, such notice
shall be given at least 10 days prior to the date so fixed, and in case of all
other action, such notice shall be given at least 15 days prior to the taking of
such proposed action. Failure to give such notice, or any defect therein, shall
not affect the legality or validity of any such action.

         (e) Treasury Stock. For the purposes of this Section 3.1, the sale or
other disposition of any Common Stock of the Company theretofore held in its
treasury shall be deemed to be an issuance thereof.

         3.2 Costs. The registered holder of this Warrant shall pay all
documentary, stamp, transfer or other transactional taxes attributable to the
issuance or delivery of shares of Common Stock of the Company upon exercise of
this Warrant; provided further, and not in limitation of the foregoing, that the
Company shall not be required to pay any taxes which may be payable in respect
of any transfer involved in the issuance or

                                       10
<PAGE>   11

delivery of any certificate for such shares. The holder of this Warrant shall
reimburse the Company for any such taxes assessed against the Company.

         3.3 Reservations of Shares. The Company shall reserve at all times so
long as this Warrant remains outstanding, free from preemptive rights, out of
its treasury Common Stock or its authorized but unissued shares of Common Stock,
or both, solely for the purpose of effecting the exercise of this Warrant,
sufficient shares of Common Stock to provide for the exercise hereof.

         3.4 Valid Issuance. All shares of Common Stock which may be issued upon
exercise of this Warrant will upon issuance by the Company be duly and validly
issued, fully paid and nonassessable and free from all taxes, liens and charges
with respect to the issuance thereof attributable to any act or omission by the
Company, and the Company shall take no action which will cause a contrary result
(including without limitation, any action which would cause the Exercise Price
to be less than the par value, if any, of the Common Stock).

                                   ARTICLE IV

                                  Terms Defined

         As used in this Warrant, unless the context otherwise requires, the
following terms have the respective meanings set forth below or in the Section
indicated:

         Additional Shares of Common Stock -- Section 3.1(a)(v)(E).

         Acquisition -- any consolidation or merger of the Company with or into
any other corporation or other entity or person, or any other corporate
reorganization, in which the stockholders of the Company immediately prior to
such consolidation, merger or reorganization, own less than 50% of the Company's
voting power immediately after such consolidation, merger or reorganization, or
any transaction or series of related transactions to which the Company is a
party in which in excess of fifty percent (50%) of the Company's voting power is
transferred.

         Asset Transfer -- a sale, lease or other disposition of all or
substantially all of the assets of the Company.

         Board of Directors -- the Board of Directors of the Company.

         Common Stock -- the Company's authorized Common Stock, $0.01 par value
per share.

         Company - Tyler Technologies, Inc., a Delaware corporation, and any
other corporation assuming or required to assume the obligations undertaken in
connection with this Warrant.

                                       11
<PAGE>   12

         Current Market Price -- Section 3.1(b).

         Effective Price  --  Section 3.1(a)(v)(E).

         Outstanding -- when used with reference to Common Stock at any date,
all issued shares of Common Stock (including, but without duplication, shares
deemed issued pursuant to Article III) at such date, except shares then held in
the treasury of the Company.

         Person -- any individual, corporation, partnership, trust,
organization, association or other entity or individual.

         Securities Act -- the Securities Act of 1933 and the rules and
regulations thereunder, all as the same shall be in effect at the time.

         Trading Day -- Section 3.1(b).

         Warrant -- this Warrant and any successor or replacement Warrant
delivered in accordance with Section 2.3 or 6.8.

         Warrant Office -- Section 2.1.

         Warrant Shares -- shall mean the shares of Common Stock purchased or
purchasable by the registered holder of this Warrant or the permitted assignees
of such holder upon exercise thereof pursuant to Article I hereof.

                                    ARTICLE V

                             Covenant of the Company

         The Company covenants and agrees that this Warrant shall be binding
upon any corporation succeeding to the Company by merger, consolidation or
acquisition of all or substantially all of the Company's assets.

                                   ARTICLE VI

                                  Miscellaneous

         6.1 Entire Agreement. This Warrant contains the entire agreement
between the holder hereof and the Company with respect to the shares which it
can purchase upon exercise hereof and the related transactions and supersedes
all prior arrangements or understanding with respect thereto.

         6.2 Governing Law. This Warrant shall be governed by and construed in
accordance with the laws of the State of Texas.

                                       12
<PAGE>   13

         6.3 Waiver and Amendment. Any term or provision of this Warrant may be
waived at any time by the party which is entitled to the benefits thereof and
any term or provision of this Warrant may be amended or supplemented at any time
by agreement of the holder hereof and the Company, except that any waiver of any
term or condition, or any amendment or supplementation, of this Warrant must be
in writing. A waiver of any breach or failure to enforce any of the terms or
conditions of this Warrant shall not in any way affect, limit or waive a party's
rights hereunder at any time to enforce strict compliance thereafter with every
term or condition of this Warrant.

         6.4 Illegality. In the event that any one or more of the provisions
contained in this Warrant shall be determined to be invalid, illegal or
unenforceable in any respect for any reason, the validity, legality and
enforceability of any such provision in any other respect and the remaining
provisions of this Warrant shall not, at the election of the party for whom the
benefit of the provision exists, be in any way impaired.

         6.5 Copy of Warrant. A copy of this Warrant shall be filed among the
records of the Company.

         6.6 Notice. Any notice or other document required or permitted to be
given or delivered to the holder hereof shall be delivered at, or sent by
certified or registered mail to such holder at, the last address shown on the
books of the Company maintained at the Warrant Office for the registration of
this Warrant or at any more recent address of which the holder hereof shall have
notified the Company in writing. Any notice or other document required or
permitted to be given or delivered to the Company, other than such notice or
documents required to be delivered to the Warrant Office, shall be delivered at,
or sent by certified or registered mail to, the office of the Company at 2800
West Mockingbird Lane, Dallas, Texas 75235 or any other address within the
continental United States of America as shall have been furnished by the Company
to the holder of this Warrant.

         6.7 Limitation of Liability; Not Stockholders. No provision of this
Warrant shall be construed as conferring upon the holder hereof the right to
vote, consent, receive dividends or receive notices other than as herein
expressly provided in respect of meetings of stockholders for the election of
directors of the Company or any other matter whatsoever as a stockholder of the
Company. No provision hereof, in the absence of affirmative action by the holder
hereof to purchase shares of Common Stock, and no mere enumeration herein of the
rights or privileges of the holder hereof, shall give rise to any liability of
such holder for the purchase price of any shares of Common Stock or as a
stockholder of the Company, whether such liability is asserted by the Company or
by creditors of the Company.

         6.8 Exchange, Loss, Destruction, etc. of Warrant. Upon receipt of
evidence satisfactory to the Company of the loss, theft, mutilation or
destruction of this Warrant, and in the case of any such loss, theft or
destruction upon delivery of a bond of indemnity in such form and amount as
shall be reasonably satisfactory to the Company, or in the event of such
mutilation upon surrender and cancellation of this Warrant, the Company

                                       13
<PAGE>   14

will make and deliver a new Warrant of like tenor, in lieu of such lost, stolen,
destroyed or mutilated Warrant; provided, however, that the original recipient
of this Warrant shall not be required to provide any such bond of indemnity and
may in lieu thereof provide his agreement of indemnity. Any Warrant issued under
the provisions of this Section 6.8 in lieu of any Warrant alleged to be lost,
destroyed or stolen, or in lieu of any mutilated Warrant, shall constitute an
original contractual obligation on the part of the Company. This Warrant shall
be promptly canceled by the Company upon the surrender hereof in connection with
any exchange or replacement. The registered holder of this Warrant shall pay all
taxes (including securities transfer taxes) and all other expenses and charges
payable in connection with the preparation, execution and delivery of Warrants
pursuant to this Section 6.8.

         6.9 Headings. The Article and Section and other headings herein are for
convenience only and are not a part of this Warrant and shall not affect the
interpretation thereof.

         IN WITNESS WHEREOF, the Company has caused this Warrant to be signed in
its name.

         Dated: May __, 2000

                                        TYLER TECHNOLOGIES, INC.

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

                                       14
<PAGE>   15

                               SUBSCRIPTION NOTICE

          The undersigned, the holder of the foregoing Warrant, hereby elects to
exercise purchase rights represented by said Warrant for, and to purchase
thereunder __________ shares of the Common Stock covered by said Warrant and
herewith makes payment in full therefor pursuant to Section 1.1 of such Warrant,
and requests (a) that certificates for such shares (and any securities or other
property issuable upon such exercise) be issued in the name of, and delivered
to, ___________ , ___________ and (b) if such shares shall not include all of
the shares issuable as provided in said Warrant, that a new Warrant of like
tenor and date for the balance of the shares issuable thereunder be delivered to
the undersigned.

          The undersigned represents that (1) the aforesaid shares of Common
Stock are being acquired for the account of the undersigned for investment not
with view to, or for resale in connection with, the distribution thereof and
that the undersigned has no present intention of distributing or reselling such
shares; (2) the undersigned is aware of the Company's business affairs and
financial condition and has acquired sufficient information about the Company to
reach an informed and knowledgeable decision regarding its investment in the
Company; (3) the undersigned is experienced in making investments of this type
and has such knowledge and background in financial and business matters that the
undersigned is capable of evaluating the merits and risks of this investment and
protecting the undersigned's own interests; (4) the undersigned understands that
the shares of Common Stock issuable upon exercise of this Warrant have not been
registered under the Securities Act of 1933, as amended (the "Securities Act'),
by reason of a specific exemption from the registration provisions of the
Securities Act, which exemption depends upon, among other things, the bona fide
nature of the investment intent as expressed herein, and, because such
securities have not been registered under the Securities Act, they must be held
indefinitely unless subsequently registered under the Securities Act or an
exemption from such registration is available; (5) the undersigned is aware that
the aforesaid shares of Common Stock may not be sold pursuant to Rule 144
adopted under the Securities Act unless certain conditions are met and until the
undersigned has held the shares for the number of years prescribed by Rule 144,
that among the conditions for use of the Rule is the availability of current
information to the public about the Company and the Company has not made such
information available and has no present plans to do so; and (6) the undersigned
agrees not to make any disposition of all or any part of the aforesaid shares
Common Stock unless and until there is then in effect a registration statement
under the Securities Act covering such proposed disposition and such disposition
is made in accordance with said registration statement, or the undersigned has
provided the Company with an opinion of counsel satisfactory to the Company,
stating that such registration is not required.

                                           --------------------------------

Dated:                ,
      ----------------  -----

                                       15
<PAGE>   16

                                   ASSIGNMENT

For value received, ______________________________, hereby sells, assigns and
transfers unto_________________________ the within Warrant, together with all
right, title and interest therein and does hereby irrevocably constitute and
appoint ____________________________________attorney, to transfer said Warrant
on the books of the Company, with full power of substitution.

                                            --------------------------------

Dated:                , 19
      ----------------    --

                                       16

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