| AT&T Inc. |
28,861 |
| Keller Williams |
14,224 |
| Baylor College of Medicine |
12,256 |
| North East ISD |
7,673 |
| University of Texas Health Science Center at San Antonio |
7,554 |
| HP Enterprise Services |
7,533 |
| Fort Bend Independent School District |
7,245 |
| Dell, Inc. |
6,482 |
| Clear Channel Communications, Inc. |
6,015 |
| State of Texas (USA) |
4,683 |
| Texas A & M University |
4,406 |
| Dallas County Community College District |
4,185 |
| Houston Community College |
3,903 |
| The University of Texas at Dallas |
3,326 |
| Tenet Healthcare Corporation |
3,264 |
| Exxon Mobil Corporation |
3,194 |
| The University of Texas at Austin |
3,027 |
| Shell Oil Company |
3,011 |
| University of Texas Arlington |
2,998 |
| Abilene Independant School District |
2,473 |
| Tarrant County Junior College |
2,442 |
| Affiliated Computer Services, Inc |
2,381 |
| Kinetic Concepts, Inc. |
2,277 |
| Verizon Business |
2,274 |
| Curves International Inc. |
2,193 |
| Administaff, Inc. |
2,070 |
| ConocoPhillips Company |
2,052 |
| AUSTIN ISD |
1,962 |
| Rice University |
1,931 |
| Alamo Community College District |
1,886 |
| The University of Texas M. D. Anderson Cancer Center |
1,845 |
| BearingPoint, Inc. |
1,736 |
| Coldwell Banker United |
1,730 |
| Collin County Community College District |
1,714 |
| BMC Software, Inc. |
1,698 |
| Stephen F. Austin State University |
1,546 |
| SYSCO Corporation |
1,531 |
| Halliburton Company |
1,482 |
| Baker Hughes Incorporated |
1,400 |
| South Texas College |
1,370 |
| Univ Texas - Pan American |
1,369 |
| Southwest Airlines Co. |
1,364 |
| Trane |
1,345 |
| Schlumberger Limited |
1,329 |
| Texas Instruments Incorporated |
1,286 |
| Ericsson Inc. |
1,265 |
| Fulbright |
1,260 |
| J. C. Penney Company, Inc. |
1,244 |
| Texas State University-San Marcos |
1,209 |
| Kimberly-Clark Corporation |
1,186 |
| Baylor University |
1,186 |
| University of North Texas |
1,178 |
| American Airlines |
1,155 |
| Tarleton State University |
1,151 |
| Alcon Laboratories Inc |
1,143 |
| Sabre Holdings Corporation |
1,133 |
| Anadarko Petroleum Corporation |
1,131 |
| Waste Management, Inc. |
1,127 |
| Fluor Corporation |
1,125 |
| Prudential Gary Greene Rltrs - Penny N. Pefanis |
1,123 |
| Marshall Independent School District |
1,072 |
| Comerica Incorporated |
1,061 |
| Ebby Halliday - Carol McCracken |
1,055 |
| Nokia Corporation |
1,048 |
| University of Texas Health Center at Tyler |
1,029 |
| University of Texas |
1,025 |
| Benold Middle School |
1,011 |
| Prairie View A&M University |
1,004 |
| USAA |
999 |
| Lamar University |
981 |
| Marathon Oil Corporation |
969 |
| Vinson & Elkins L.L.P. |
956 |
| Texas A&M International University |
951 |
| Baker Botts LLP |
944 |
| Mary Kay Inc. |
940 |
| Texas A&M University-Kingsville |
935 |
| El Paso Corporation |
932 |
| University of Texas Southwestern Medical Center |
929 |
| University of Houston |
922 |
| RadioShack Corporation |
915 |
| Baylor Health Care System |
913 |
| Burlington Northern Santa Fe Corporation |
905 |
| Valero Energy Corporation |
902 |
| St. Edward's University |
898 |
| Stewart Information Services Corporation |
896 |
| El Paso Community College |
881 |
| Alliance Data Systems Corporation |
880 |
| Continental Airlines, Inc. |
869 |
| Energy Future Holdings |
865 |
| CHRISTUS Health |
854 |
| Dean Foods Company |
845 |
| Belton ISD |
792 |
| Fort Bend County, Texas |
791 |
| Texas Comptroller of Public Accounts |
779 |
| Houston Independent School District |
777 |
| Whole Foods Market, Inc. |
776 |
| CenterPoint Energy, Inc. |
768 |
| Freescale Semiconductor Inc |
766 |
| Wylie ISD |
765 |
| Haynes and Boone, LLP |
762 |
| Emerson Process Management |
758 |
| Texas Tech University |
756 |
| Army and Air Force Exchange Service |
751 |
| National Oilwell Varco |
744 |
| City of Houston, Texas |
732 |
| The Staubach Company |
730 |
| LyondellBasell |
730 |
| Harte-Hanks, Inc. |
717 |
| Idearc Media LLC |
714 |
| The Texas A&M University System Health Science Center |
695 |
| The University of Texas at Brownsville and Texas Southmost College |
693 |
| Plano Independent School District |
693 |
| Blinn College |
692 |
| Cameron International Corporation |
691 |
| Century 21 Judge Fite |
689 |
| Cedar Hill Isd (057-904) |
688 |
| City of Austin |
685 |
| City Of San Antonio |
684 |
| Dallas ISD |
681 |
| Harris County, Texas |
676 |
| Centex Corporation |
673 |
| D.R. Horton, Inc. |
672 |
| Waxahachie ISD |
671 |
| 7-Eleven, Inc. |
665 |
| Trammell Crow Company |
659 |
| CME Group Inc the |
658 |
| State of Texas - Department of Transportation |
652 |
| Texas A&M University-Commerce |
650 |
| US Oncology, Inc. |
648 |
| Winstead PC |
647 |
| Andrews Kurth LLP |
645 |
| FedEx Office |
642 |
| Angelo State University |
640 |
| Temple-Inland Inc. |
634 |
| American Heart Association |
633 |
| City of Round Rock |
628 |
| Invensys Process Systems |
615 |
| Michaels Stores, Inc. |
614 |
| McLennan Community College |
608 |
| Flowserve Corporation |
603 |
| Broadview Security |
602 |
| Texas State Tech College |
600 |
| H. E. B. Grocery Company |
584 |
| Kinder Morgan, Inc. |
584 |
| Texas Health Resources Inc. |
580 |
| COMSYS IT Partners, Inc. |
578 |
| Weatherford International Ltd. |
577 |
| University of Texas Health Science Center |
576 |
| NEC Corporation |
576 |
| Star-Telegram |
572 |
| Ennis Independent School District |
572 |
| T A Howard Middle School |
571 |
| Atos Origin NA, Inc. |
570 |
| Transwestern Commercial Services |
562 |
| South Plains College |
561 |
| Apache Corporation |
561 |
| Tesco Corporation |
560 |
| Richardson Independent School District |
554 |
| VALIC |
552 |
| Air Liquide Electronics |
547 |
| Cooper Industries Ltd. |
545 |
| Hitachi Consulting Corporation |
544 |
| Southwest Research Institute |
544 |
| The Neiman Marcus Group, Inc. |
540 |
| Texas Lutheran University |
536 |
| Flour Bluff Independent School District |
532 |
| Cadbury Adams |
531 |
| Texas Children's Hospital |
529 |
| Abilene Christian University |
518 |
| University of Texas Medical Branch |
515 |
| Education Svc Ctr Region 20 |
514 |
| Invesco AIM |
512 |
| Galveston Independent School District |
511 |
| Pilgrim's Pride Corporation |
504 |
| Memorial Hermann Healthcare System |
502 |
| Blockbuster Inc. |
495 |
| Houston Chronicle |
494 |
| Frost & Sullivan, Inc. |
494 |
| RR Advisors, LLC |
494 |
| CompuCom Systems, Inc. |
493 |
| CORESTAFF Services |
492 |
| McLane Company, Inc. |
491 |
| Bracewell |
490 |
| Southern Methodist University |
486 |
| FMC Technologies, Inc. |
486 |
| Reliant Energy |
478 |
| City of Fort Worth |
477 |
| LAMAR CISD |
473 |
| MARFA ISD |
471 |
| Round Rock Independent School District |
467 |
| Thompson & Knight LLP |
464 |
| UH-Downtown |
461 |
| Keller Williams Realty |
455 |
| Texas A & M University at Galveston |
450 |
| Accor North America |
449 |
| Trinity Industries, Inc. |
448 |
| Sul Ross State University |
446 |
| Total SA |
445 |
| Texas A&M University-Corpus Christi |
441 |
| Scott & White |
441 |
