Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  BROWN BROTHERS HARRIMAN & CO
 2. Date of Event Requiring Statement (Month/Day/Year)
10/26/2009		 3. Issuer Name and Ticker or Trading Symbol
TYLER TECHNOLOGIES INC [TYL]
(Last)
(First)
(Middle)
140 BROADWAY, 		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK,, NY 10005		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 3,535,013
I (1)
See footnote

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BROWN BROTHERS HARRIMAN & CO
140 BROADWAY
NEW YORK,, NY 10005		     X    
1818 Master Partners, Ltd.
C/O BROWN BROTHERS HARRIMAN & CO.
140 BROADWAY
NEW YORK,, NY 10005		     X    
Witmer Richard H.
C/O BROWN BROTHERS HARRIMAN & CO.
140 BROADWAY
NEW YORK,, NY 10005		     X    
Hartch Timothy E.
C/O BROWN BROTHERS HARRIMAN & CO.
140 BROADWAY
NEW YORK,, NY 10005		     X    

Signatures

Brown Brothers Harriman & Co. By: /s/ Howard M. Felson, Vice President 04/30/2010
**Signature of Reporting Person Date
1818 Master Partners, Ltd. By: /s/ Richard H. Witmer, Director 04/30/2010
**Signature of Reporting Person Date
/s/ Richard H. Witmer 04/30/2010
**Signature of Reporting Person Date
/s/ Timothy E. Hartch 04/30/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) All shares reported on this Form 3 are held by 1818 Master Partners, Ltd. (the "Fund") on behalf of investors in the Fund. Brown Brothers Harriman & Co. ("BBH&Co."), which holds the voting interest (management shares) in the Fund, has designated Richard H. Witmer and Timothy E. Hartch, or either of them, as the sole and exclusive persons at BBH&Co. having voting power (including the power to vote or to direct the vote) and investment power (including the power to dispose or to direct the disposition) with respect to all investments of the Fund. Each reporting person disclaims beneficial ownership of the reported securities except to the extent of its or his pecuniary interest therein.
 
Remarks:
As a result of the issuer's purchase of shares pursuant to a share repurchase program approved by the issuer's board of directors, the shares reported on this Form 3 represented, based on information made publicly available by the issuer, more than 10% of the issuer's outstanding common stock as of approximately October 26, 2009.  The reporting persons have not purchased or sold any shares of the issuer's common stock since the date of the event giving rise to this filing.

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