| AT&T Inc. |
29,955 |
| Keller Williams |
15,105 |
| Baylor College of Medicine |
12,242 |
| North East ISD |
7,673 |
| University of Texas Health Science Center at San Antonio |
7,552 |
| HP Enterprise Services |
7,525 |
| Fort Bend Independent School District |
7,245 |
| Dell, Inc. |
6,402 |
| Clear Channel Communications, Inc. |
5,635 |
| State of Texas (USA) |
4,913 |
| AUSTIN ISD |
4,739 |
| Texas A & M University |
4,385 |
| Dallas County Community College District |
4,184 |
| Houston Community College |
3,906 |
| The University of Texas at Dallas |
3,320 |
| Tenet Healthcare Corporation |
3,223 |
| Exxon Mobil Corporation |
3,120 |
| The University of Texas at Austin |
3,045 |
| Shell Oil Company |
3,039 |
| University of Texas Arlington |
3,008 |
| Abilene Independant School District |
2,485 |
| Tarrant County Junior College |
2,442 |
| Affiliated Computer Services, Inc |
2,294 |
| BearingPoint, Inc. |
2,293 |
| Kinetic Concepts, Inc. |
2,280 |
| Curves International Inc. |
2,192 |
| Administaff, Inc. |
2,148 |
| Rice University |
2,025 |
| ConocoPhillips Company |
2,023 |
| Alamo Community College District |
1,867 |
| The University of Texas M. D. Anderson Cancer Center |
1,830 |
| Coldwell Banker United |
1,729 |
| Collin County Community College District |
1,714 |
| BMC Software, Inc. |
1,686 |
| Verizon |
1,652 |
| Stephen F. Austin State University |
1,546 |
| Halliburton Company |
1,512 |
| Univ Texas - Pan American |
1,491 |
| SYSCO Corporation |
1,487 |
| South Texas College |
1,460 |
| Southwest Airlines Co. |
1,388 |
| Fulbright |
1,372 |
| Baker Hughes Incorporated |
1,357 |
| Schlumberger Limited |
1,329 |
| Trane |
1,315 |
| Benold Middle School |
1,307 |
| Comerica Incorporated |
1,280 |
| American Airlines |
1,280 |
| Vinson & Elkins L.L.P. |
1,271 |
| Texas Instruments Incorporated |
1,262 |
| Baylor University |
1,252 |
| Ericsson Inc. |
1,240 |
| Waste Management, Inc. |
1,215 |
| J. C. Penney Company, Inc. |
1,202 |
| Kimberly-Clark Corporation |
1,196 |
| University of North Texas |
1,172 |
| Tarleton State University |
1,147 |
| Alcon Laboratories Inc |
1,131 |
| Prudential Gary Greene Rltrs - Penny N. Pefanis |
1,123 |
| Anadarko Petroleum Corporation |
1,116 |
| Nokia Corporation |
1,096 |
| Fluor Corporation |
1,088 |
| Century 21 Judge Fite |
1,084 |
| Sabre Holdings Corporation |
1,080 |
| Marshall Independent School District |
1,073 |
| Baker Botts LLP |
1,067 |
| Ebby Halliday - Carol McCracken |
1,054 |
| University of Texas Health Center at Tyler |
1,027 |
| University of Texas |
1,018 |
| Prairie View A&M University |
1,003 |
| USAA |
980 |
| Lamar University |
980 |
| Texas A&M International University |
954 |
| Texas State University-San Marcos |
953 |
| El Paso Corporation |
949 |
| Marathon Oil Corporation |
940 |
| Wylie ISD |
936 |
| Texas A&M University-Kingsville |
935 |
| Blinn College |
934 |
| University of Houston |
934 |
| University of Texas Southwestern Medical Center |
920 |
| RadioShack Corporation |
907 |
| Mary Kay Inc. |
905 |
| Valero Energy Corporation |
904 |
| Stewart Information Services Corporation |
891 |
| Baylor Health Care System |
888 |
| St. Edward's University |
888 |
| El Paso Community College |
882 |
| Burlington Northern Santa Fe Corporation |
876 |
| Centex Corporation |
864 |
| Alliance Data Systems Corporation |
859 |
| Energy Future Holdings |
854 |
| CHRISTUS Health |
846 |
| Cedar Hill Isd (057-904) |
846 |
| Dean Foods Company |
825 |
| Continental Airlines, Inc. |
820 |
| City of Houston, Texas |
802 |
| Texas Comptroller of Public Accounts |
798 |
| Belton ISD |
794 |
| Fort Bend County, Texas |
791 |
| Emerson Process Management |
773 |
| Houston Independent School District |
771 |
| Whole Foods Market, Inc. |
764 |
| The Dallas Morning News |
762 |
| Trammell Crow Company |
758 |
| National Oilwell Varco |
758 |
| Texas Tech University |
756 |
| CenterPoint Energy, Inc. |
756 |
| Haynes and Boone, LLP |
753 |
| Texas A&M University-Commerce |
749 |
| Freescale Semiconductor Inc |
745 |
| City of Austin |
725 |
| Harris County, Texas |
724 |
| The Staubach Company |
723 |
| Andrews Kurth LLP |
722 |
| Harte-Hanks, Inc. |
716 |
| Idearc Media LLC |
707 |
| LyondellBasell |
704 |
| The University of Texas at Brownsville and Texas Southmost College |
698 |
| The Texas A&M University System Health Science Center |
696 |
| Plano Independent School District |
692 |
| City Of San Antonio |
679 |
| Dallas ISD |
676 |
| Waxahachie ISD |
674 |
| Texas State Tech College |
663 |
| Cameron International Corporation |
663 |
| D.R. Horton, Inc. |
660 |
| 7-Eleven, Inc. |
656 |
| Winstead PC |
656 |
| Army and Air Force Exchange Service |
654 |
| US Oncology, Inc. |
650 |
| CME Group Inc the |
649 |
| State of Texas - Department of Transportation |
644 |
| Angelo State University |
637 |
| FedEx Office |
635 |
| American Heart Association |
632 |
| City of Round Rock |
630 |
| Invensys Process Systems |
615 |
| Atos Origin NA, Inc. |
609 |
| McLennan Community College |
608 |
| Temple-Inland Inc. |
606 |
| Pizza Hut |
604 |
| Transwestern Commercial Services |
602 |
| Texas Health Resources Inc. |
602 |
| Michaels Stores, Inc. |
599 |
| Flowserve Corporation |
592 |
| Broadview Security |
588 |
| COMSYS IT Partners, Inc. |
585 |
| University of Texas Medical Branch |
580 |
| Kinder Morgan, Inc. |
580 |
| University of Texas Health Science Center |
573 |
| Ennis Independent School District |
572 |
| Tesco Corporation |
571 |
| T A Howard Middle School |
571 |
| H. E. B. Grocery Company |
569 |
| Blockbuster Inc. |
568 |
| Star-Telegram |
564 |
| South Plains College |
561 |
| Richardson Independent School District |
553 |
| Weatherford International Ltd. |
553 |
| Southwest Research Institute |
552 |
| Bracewell |
551 |
| VALIC |
548 |
| NEC Corporation |
546 |
| Cooper Industries Ltd. |
545 |
| Cadbury Adams |
543 |
| Flour Bluff Independent School District |
541 |
| Hitachi Consulting Corporation |
540 |
| Apache Corporation |
537 |
| Texas Lutheran University |
535 |
| Thompson & Knight LLP |
531 |
| Abilene Christian University |
520 |
| Air Liquide Electronics |
520 |
| Invesco AIM |
518 |
| Education Svc Ctr Region 20 |
514 |
| Texas Children's Hospital |
513 |
| Galveston Independent School District |
512 |
| CompuCom Systems, Inc. |
507 |
| Memorial Hermann Healthcare System |
499 |
| Pilgrim's Pride Corporation |
492 |
| CORESTAFF Services |
490 |
| West Texas A&M University |
488 |
| Houston Chronicle |
486 |
| Frost & Sullivan, Inc. |
482 |
| Keller Williams Realty |
481 |
| City of Fort Worth |
475 |
| Southern Methodist University |
473 |
| MARFA ISD |
473 |
| LAMAR CISD |
472 |
| McLane Company, Inc. |
470 |
| University of Texas at San Antonio |
470 |
| Round Rock Independent School District |
467 |
| UH-Downtown |
459 |
| SULPHUR SPRINGS ISD |
452 |
| Texas A & M University at Galveston |
450 |
| FMC Technologies, Inc. |
450 |
| Accor North America |
450 |
| Texas Tech University Health Sciences Center |
448 |
| Sul Ross State University |
445 |
| Texas A&M University-Corpus Christi |
440 |
