SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G 
Under the Securities Exchange Act of 1934
(Amendment No. __)*
Tyler Technologies, Inc.
(Name of Issuer) 
[Common Stock, Par Value $0.01 Per share]
Common stock
902252105
(CUSIP Number) 
April 28, 2005
(Date of Event Which Requires Filing of this Statement) 
*The remainder of this cover page shall be filled out for a reporting 
person's initial filing 
on this form with respect to the subject class of securities, and for 
any subsequent 
amendment containing information which would alter the disclosures 
provided in a prior 
cover page. 
 
The information required in the remainder of this cover page shall not 
be deemed to be 
"filed" for the purpose of Section 18 of the Securities Exchange Act of 
1934 ("Act") or 
otherwise subject to the liabilities of that section of the Act but 
shall be subject to all 
other provisions of the Act (however, see the Notes). 
 

________________________________________________________________________
___________ 
Check the appropriate box to designate the rule pursuant to which this 
Schedule is filed: 
[ ] Rule 13d-1(b) 
[x] Rule 13d-1(c) 
[ ] Rule 13d-1(d) 
________________________________________________________________________
___________




 
1. 	Names of Reporting Persons I.R.S. Identification Nos. of Above 
Persons (entities 
	only)

            1818 MASTER PARTNERS, LTD. ? 98-0335961
            

 
2.	Check the Appropriate Box if a Member of a Group (See 
Instructions)   
	(a)  ? 
	(b)  ?

3.	SEC Use Only 
........................................................................
............

4.	Citizenship or Place of Organization:  
            Cayman
            

Number of 
Shares 
Beneficially 
Owned by
5.	Sole Voting Power:  2,202,100
Each Reporting 
Person with
6.	Shared Voting Power:   2,202,100

__________________________________________________________________ 
 
7.	Sole Dispositive Power:  2,202,100
	
__________________________________________________________________ 
 
8.	Shared Dispositive Power:   2,202,100

 
9.	Aggregate Amount Beneficially Owned by Each Reporting Person:  
2,202,100

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares:

11.	Percent of Class Represented by Amount in Row 9:  5.5%

12.	Type of Reporting Person:  
            PN







 
1. 	Names of Reporting Persons I.R.S. Identification Nos. of Above 
Persons (entities 
	only)
            RICHARD H. WITMER



 
2.	Check the Appropriate Box if a Member of a Group (See 
Instructions)   
	(a)  
	(b)  

3.	SEC Use Only 
....................................................................
4.	Citizenship or Place of Organization:  US CITIZEN

Number of 
Shares 
Beneficially 
Owned by
5.	Sole Voting Power: 2,202,100
Each Reporting 
Person with
6.	Shared Voting Power: 2,202,100

__________________________________________________________________ 
 
7.	Sole Dispositive Power: 2,202,100

__________________________________________________________________ 
 
8.	Shared Dispositive Power:  2,202,100


 
9.	Aggregate Amount Beneficially Owned by Each Reporting Person: 
2,202,100

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares:

11.	Percent of Class Represented by Amount in Row 9: 5.5%

12.	Type of Reporting Person: IN





 
1. 	Names of Reporting Persons I.R.S. Identification Nos. of Above 
Persons (entities 
	only)
            TIMOTHY E. HARTCH



 
2.	Check the Appropriate Box if a Member of a Group (See 
Instructions)   
	(a)  ? 
	(b)  ?

3.	SEC Use Only
.................................................................... 

4.	Citizenship or Place of Organization:  US CITIZEN

Number of 
Shares 
Beneficially 
Owned by
5.	Sole Voting Power: 2,202,100
Each Reporting 
Person with
6.	Shared Voting Power: 2,202,100

__________________________________________________________________ 
 
7.	Sole Dispositive Power: 2,202,100

__________________________________________________________________ 
 
8.	Shared Dispositive Power: 2,202,100


 
9.	Aggregate Amount Beneficially Owned by Each Reporting Person:  
2,202,100

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares:

11.	Percent of Class Represented by Amount in Row 9: 5.5%

12.	Type of Reporting Person:  IN




 

 
1. 	Names of Reporting Persons I.R.S. Identification Nos. of Above 
Persons (entities 
	only)
            BROWN BROTHERS HARRIMAN & CO.  13-4973745


 
2.	Check the Appropriate Box if a Member of a Group (See 
Instructions)   
	(a)  ? 
	(b)  ?

3.	SEC Use Only
...........................................................

4.	Citizenship or Place of Organization:  NEW YORK

Number of 
Shares 
Beneficially 
Owned by
5.	Sole Voting Power: 0
Each Reporting 
Person with
6.	Shared Voting Power: 2,202,100

__________________________________________________________________ 
 
7.	Sole Dispositive Power: 0

__________________________________________________________________ 
 
8.	Shared Dispositive Power: 2,202,100


 
9.	Aggregate Amount Beneficially Owned by Each Reporting Person:  
2,202,100

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares:

11.	Percent of Class Represented by Amount in Row 9: 5.5%

12.	Type of Reporting Person:  IN




Item 1.
1(a) Name of Issuer:   TYLER TECHNOLOGIES, INC.
 
1(b) Address of Issuer's Principal Executive Offices:
        5949 SHERRY LANE, SUITE 1400
        DALLAS, TX 75225

Item 2.
2(a)  	NAME OF PERSON(S) FILING
	1818 MASTER PARTNERS, LTD.
2(b)	ADDRESS OF PRINCIPAL BUSINESS OFFICE
	140 BROADWAY
	NEW YORK, NY 10005
2(c)	CITIZENSHIP
	Cayman
2(d)	TITLE OF CLASS OF SECURITIES
	COMMON
2(e)	CUSIP NUMBER
	902252105
 
Item 3.  IF THIS STATEMENT IS BEING FILED PURSUANT TO RULES 13D-1(B) OR 
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:

(a) [ ] 	Broker or Dealer registered under Section 15 of the Act (15 
USC 78o)
(b) [ ]	Bank as defined in Section 3(a)(6) of the Act (15 USC 78c)
(c) [ ] 	Insurance Company as defined in Section 3(a)(19) of the Act 
(15 USC 78c)
(d) [ ]	Investment Company registered under Section 8 of the 
Investment Company Act 
of 1940 (15 USC 80a-8)
(e) [ ]	Investment Advisor in accordance with Section 
240.13d(b)(1)(ii)(E)
(f)  [ ]	Employee Benefit Plan or endowment fund in accordance with 
Section 240.13d-
1(1)(ii)(F)
(g) [ ]	Parent Holding Company or control person in accordance with 
Section 240.13d-
1(1)(ii)(G)
(h) [ ] 	A savings association as defined in Section 3(b) of the 
Federal Deposit 
Insurance Act (12 USC 1813).
(i) [ ]	A church plan that is excluded from the definition of an 
investment company 
under Section 3(c)(14) of the Investment Company Act of 1940 (15 USC 
80a-3)
(j) [ ]	Group, in accordance with Section 240.13d-1(b)(1)(ii)(J)

Item 1.
1(a) Name of Issuer:   TYLER TECHNOLOGIES, INC.
 
1(b) Address of Issuer's Principal Executive Offices:
        5949 SHERRY LANE, SUITE 1400
        DALLAS, TX 75225

Item 2.
2(a)  	NAME OF PERSON(S) FILING
	RICHARD H. WITMER
2(b)	ADDRESS OF PRINCIPAL BUSINESS OFFICE
	140 BROADWAY
	NEW YORK, NY 10005
2(c)	CITIZENSHIP
	US
2(d)	TITLE OF CLASS OF SECURITIES
	COMMON
2(e)	CUSIP NUMBER
	902252105
 
Item 3.  IF THIS STATEMENT IS BEING FILED PURSUANT TO RULES 13D-1(B) OR 
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:

(a) [ ] 	Broker or Dealer registered under Section 15 of the Act (15 
USC 78o)
(b) [ ]	Bank as defined in Section 3(a)(6) of the Act (15 USC 78c)
(c) [ ] 	Insurance Company as defined in Section 3(a)(19) of the Act 
(15 USC 78c)
(d) [ ]	Investment Company registered under Section 8 of the 
Investment Company Act 
of 1940 (15 USC 80a-8)
(e) [ ]	Investment Advisor in accordance with Section 
240.13d(b)(1)(ii)(E)
(f)  [ ]	Employee Benefit Plan or endowment fund in accordance with 
Section 240.13d-
1(1)(ii)(F)
(g) [ ]	Parent Holding Company or control person in accordance with 
Section 240.13d-
1(1)(ii)(G)
(h) [ ] 	A savings association as defined in Section 3(b) of the 
Federal Deposit 
Insurance Act (12 USC 1813).
(i) [ ]	A church plan that is excluded from the definition of an 
investment company 
under Section 3(c)(14) of the Investment Company Act of 1940 (15 USC 
80a-3)
(j) [ ]	Group, in accordance with Section 240.13d-1(b)(1)(ii)(J)

Item 1.
1(a) Name of Issuer:   TYLER TECHNOLOGIES, INC.
 
1(b) Address of Issuer's Principal Executive Offices:
        5949 SHERRY LANE, SUITE 1400
        DALLAS, TX 75225

Item 2.
2(a)  	NAME OF PERSON(S) FILING
	TIMOTHY E. HARTCH
2(b)	ADDRESS OF PRINCIPAL BUSINESS OFFICE
	140 BROADWAY
	NEW YORK, NY 10005
2(c)	CITIZENSHIP
	US
2(d)	TITLE OF CLASS OF SECURITIES
	COMMON
2(e)	CUSIP NUMBER
	902252105
 
Item 3.  IF THIS STATEMENT IS BEING FILED PURSUANT TO RULES 13D-1(B) OR 
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:

(a) [ ] 	Broker or Dealer registered under Section 15 of the Act (15 
USC 78o)
(b) [ ]	Bank as defined in Section 3(a)(6) of the Act (15 USC 78c)
(c) [ ] 	Insurance Company as defined in Section 3(a)(19) of the Act 
(15 USC 78c)
(d) [ ]	Investment Company registered under Section 8 of the 
Investment Company Act 
of 1940 (15 USC 80a-8)
(e) [ ]	Investment Advisor in accordance with Section 
240.13d(b)(1)(ii)(E)
(f)  [ ]	Employee Benefit Plan or endowment fund in accordance with 
Section 240.13d-
1(1)(ii)(F)
(g) [ ]	Parent Holding Company or control person in accordance with 
Section 240.13d-
1(1)(ii)(G)
(h) [ ] 	A savings association as defined in Section 3(b) of the 
Federal Deposit 
Insurance Act (12 USC 1813).
(i) [ ]	A church plan that is excluded from the definition of an 
investment company 
under Section 3(c)(14) of the Investment Company Act of 1940 (15 USC 
80a-3)
(j) [ ]	Group, in accordance with Section 240.13d-1(b)(1)(ii)(J)

Item 1.
1(a) Name of Issuer:   TYLER TECHNOLOGIES, INC.
 
1(b) Address of Issuer's Principal Executive Offices:
        5949 SHERRY LANE, SUITE 1400
        DALLAS, TX 75225

Item 2.
2(a)  	NAME OF PERSON(S) FILING
	BROWN BROTHERS HARRIMAN & CO..
2(b)	ADDRESS OF PRINCIPAL BUSINESS OFFICE
	140 BROADWAY
	NEW YORK, NY 10005
2(c)	CITIZENSHIP
	NEW YORK
2(d)	TITLE OF CLASS OF SECURITIES
	COMMON
2(e)	CUSIP NUMBER
	902252105
 
Item 3.  IF THIS STATEMENT IS BEING FILED PURSUANT TO RULES 13D-1(B) OR 
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:

(a) [ ] 	Broker or Dealer registered under Section 15 of the Act (15 
USC 78o)
(b) [ ]	Bank as defined in Section 3(a)(6) of the Act (15 USC 78c)
(c) [ ] 	Insurance Company as defined in Section 3(a)(19) of the Act 
(15 USC 78c)
(d) [ ]	Investment Company registered under Section 8 of the 
Investment Company Act 
of 1940 (15 USC 80a-8)
(e) [ ]	Investment Advisor in accordance with Section 
240.13d(b)(1)(ii)(E)
(f)  [ ]	Employee Benefit Plan or endowment fund in accordance with 
Section 240.13d-
1(1)(ii)(F)
(g) [ ]	Parent Holding Company or control person in accordance with 
Section 240.13d-
1(1)(ii)(G)
(h) [ ] 	A savings association as defined in Section 3(b) of the 
Federal Deposit 
Insurance Act (12 USC 1813).
(i) [ ]	A church plan that is excluded from the definition of an 
investment company 
under Section 3(c)(14) of the Investment Company Act of 1940 (15 USC 
80a-3)
(j) [ ]	Group, in accordance with Section 240.13d-1(b)(1)(ii)(J)

Item 4.  Ownership
(a)	Amount beneficially owned:
1818 MASTER PARTNERS, LTD. 2,202,100
RICHARD H. WITMER ? 2,202,100
TIMOTHY E. HARTCH ? 2,202,100
BROWN BROTHERS HARRIMAN & CO. ? 2,202,100

BENEFICIAL OWNERSHIP AMOUNTS WERE DETERMINED SOELY 
UPON THE ABILITY TO VOTE AND DISPOSE OF SHARES, WHICH ARE 
HELD FOR THE BENEFIT OF INVESTORS IN THE 1818 MASTER 
PARTNERS, LTD.  PERCENTAGE HELD WAS DETERMINED USING THE 
APRIL 1, 2005 PROXY WHICH INDICATED 39,715,519 SHARES 
OUTSTANDING.

(b)	Percent of class:
5.5%

(c)	Number of shares as to which such person has:
(i)	sole power to vote of to direct the vote
0
(ii)	shared power to vote or direct the vote
2,202,100

(iii)	sole power to dispose or to direct the disposition of:
0

(iv)	shared power to dispose or to direct the disposition of:
2,202,100

BENEFICIAL OWNERSHIP AMOUNTS WERE DETERMINED SOELY 
UPON THE ABILITY TO VOTE AND DISPOSE OF SHARES, WHICH ARE 
HELD FOR THE BENEFIT OF INVESTORS IN THE 1818 MASTER 
PARTNERS, LTD.

Item 5.  Ownership of 5 Percent or Less of a Class 
If this statement is being filed to report the fact that as of the date 
hereof the 
reporting person has ceased to be the beneficial owner of more than five 
percent 
of the class of securities, check the following [  ] 
Item 6.  Ownership of More than 5 Percent on Behalf of Another Person
These shares are held by the company for the benefit of the investors of 
in the 
1818 Master Partners, L.P. See also responses to item 2(a) above.

Item 7.	Identification and Classification of the Subsidiary Which 
Acquired the 
Security Being Reported on By the Parent Holding Company or Control 
Person  
	N/A
Item 8.  Identification and Classification of Members of the Group
	N/A
 Item 9.  Notice of Dissolution of Group 
	N/A
Item 10.   Certification  
By signing below I certify that, to the best of my knowledge and belief, 
the securities 
referred to above were not acquired and are not held for the purpose of 
or with the effect 
of changing or influencing the control of the issuer of the securities 
and were not 
acquired and are not held in connection with or as a participant in any 
transaction having 
that purpose or effect.


SIGNATURES
After reasonable inquiry and to the best of my knowledge and belief, I 
certify that 
the information set forth in this statement is true, complete and 
correct.

Dated:
[SIGNATURE BLOCK] 
 
________________________________ 
Name: 1818 Master Partners ? Richard 
H. Witmer, Jr. 
Title:  Partner
[SIGNATURE BLOCK] 
 
________________________________ 
Name:  Brown Brothers Harriman & Co. 
? Richard H. Witmer, Jr. 
Title: Partner
[SIGNATURE BLOCK] 
 
________________________________ 
Name: Richard H. Witmer, Jr. 
Title:  Partner

[SIGNATURE BLOCK] 
 
________________________________ 
Name: Timothy E. Hartch