| Fort Bend Independent School District USA |
7,304 |
| Rice University |
1,876 |
| Coldwell Banker United |
1,561 |
| Lamar University |
1,019 |
| Prairie View A&M University |
1,002 |
| University of Houston - Clear Lake |
826 |
| Fort Bend County, Texas |
814 |
| The Texas A&M University System Health Science Center |
694 |
| Blinn College |
641 |
| Galveston Independent School District |
514 |
| University of Texas Medical Branch |
480 |
| UH-Downtown |
461 |
| Texas A & M University at Galveston |
451 |
| Sam Huston State University |
336 |
| College of the Mainland |
307 |
| Conroe Independent School District |
305 |
| CYPRESS-FAIRBANKS ISD |
305 |
| Lamar State College, Port Arthur |
282 |
| Wharton County Junior College |
277 |
| Heritage Texas Properties - Mary J. Steele |
261 |
| OB & GYN Assocs |
257 |
| Alvin Comm College |
250 |
| Lee College |
234 |
| Integrated Electrical Services, Inc. |
229 |
| John Daugherty Realtors |
220 |
| Region 5 Education Service Center |
214 |
| Republic National Distributing Company, Inc. |
213 |
| Alief Independent School District |
212 |
| TietoEnator |
207 |
| Martha Turner Properties |
204 |
| IFCO Systems North America, Inc. |
189 |
| Beaumont Enterprise |
169 |
| Aldine Independent School District |
167 |
| Wilson |
163 |
| Lake Olympia Middle School/Fort Bend ISD |
160 |
| HUMBLE ISD |
159 |
| Frontier Elementary |
156 |
| Harris County Hospital District |
153 |
| Education Service Center Region VI |
152 |
| Greater Houston Partnership |
144 |
| BRYAN ISD |
143 |
| Rosetta Inc |
142 |
| Goodman Global, Inc. |
140 |
| Episcopal High School of Bellaire |
138 |
| Montgomery County |
137 |
| Weingarten Realty Investors |
134 |
| Porter |
130 |
| Caprock Communications Inc |
129 |
| YMCA of Greater Houston |
129 |
| East Chambers Isd (036-903) |
129 |
| Greenwood-King Properties |
128 |
| Goose Creek ISD |
126 |
| ANDREWS ISD |
123 |
| KS Management Services |
121 |
| ALPINE ISD |
116 |
| Houston Baptist University |
116 |
| Allied Home Mortgage Capital Corporation |
110 |
| Hilcorp Energy Company |
109 |
| City of Bryan |
108 |
| ABS Consulting, Risk Management |
107 |
| PROS Holdings, Inc. |
106 |
| CMAI- Chemical Market Associates, Inc. |
105 |
| Kaiser Aluminum Corporation |
104 |
| Magnolia Independent School District |
101 |
| EAST BERNARD ISD |
99 |
| Fairfield Industries |
96 |
| TOMBALL ISD |
95 |
| Walter P. Moore and Associates, Inc. |
92 |
| Clear Creek Independent School District |
91 |
| The Orange Leader |
90 |
| Beaumont ISD Information Services/Technology |
89 |
| Riviana Foods Inc. |
87 |
| Cabot Oil & Gas Corporation |
87 |
| Coats Rose Yale Ryman Lee |
87 |
| The Panhandle Pipe Line Company |
86 |
| Vopak Terminals North America Inc |
85 |
| Signature Hospital |
84 |
| PHARR-SAN JUAN-ALAMO ISD |
83 |
| GC Services Limited Partnership |
83 |
| Bryan-College Station Eagle |
81 |
| University of St. Thomas - Houston |
81 |
| Coburn Supply Company, Inc. |
81 |
| Subsea 7 |
79 |
| Prosperity Bancshares, Inc. |
79 |
| Advantage Capital Funding |
77 |
| GIDDINGS ISD |
76 |
| Richard, Wayne |
76 |
| Lja Engineering & Surveying |
76 |
| The Texas Heart Institute |
75 |
| John L. Wortham |
75 |
| Watkins Hamilton Ross |
75 |
| City of Huntsville, Texas |
74 |
| Beirne, Maynard, |
74 |
| Accudata Systems, Inc. |
73 |
| Frontier Oil Corporation |
72 |
| Jason's Deli |
72 |
| WhiteFence |
72 |
| Galveston College Foundation |
71 |
| MMI Products, Inc. |
69 |
| KPRC-TV (NBC 2) |
69 |
| Houston Rockets |
68 |
| Willbros Group |
68 |
| AIDS Foundation Houston, Inc. |
68 |
| Diamond Mc Carthy |
68 |
| St. Johns School |
67 |
| Houston Advanced Research Center |
66 |
| Capital Farm Credit |
66 |
| Houston Association of Realtors |
65 |
| NEON Enterprise Software |
65 |
| Baker Communications, Inc. |
65 |
| COLLEGE STATION ISD |
65 |
| Landmark Aviation |
65 |
| EPCO, Inc. |
64 |
| Deep East Texas Council of Governments |
63 |
| ErgoGenesis, LLC |
63 |
| Wood Mackenzie |
63 |
| Health Insurance Specialists, Inc. |
63 |
| Sanders Morris Harris Group Inc. |
63 |
| Windsor Frozen Foods |
63 |
| Harmony Science Acad (College Station) (021-804) |
63 |
| American Real Estate |
62 |
| City of Beaumont, Texas |
62 |
| Fiesta Mart, Inc. |
62 |
| The Brock Group |
62 |
| Hunting Energy Svc Lp |
60 |
| Sam Houston Area Council, Boy Scouts of |
60 |
| PPG Monarch Paint Co |
59 |
| Channelview ISD |
58 |
| Houston NFL Holdings, L.P. |
58 |
| Sroman Realty |
58 |
| Entrix, Inc. |
57 |
| Triten Corporation |
57 |
| University Title Company |
57 |
| Talent Tree, Inc. |
56 |
| Advent Global Solutions, Inc. |
56 |
| Houston Symphony |
56 |
| Million Air Interlink, Inc. |
55 |
| Tru-tech: Real Paper, Real Strength |
55 |
| Grace Presbyterian Church |
55 |
| City of Pasadena, TX |
55 |
| Linn Energy LLC |
55 |
| City of League City |
54 |
| Central Bank |
54 |
| RiceTec, Inc |
54 |
| Merisol USA LLC |
54 |
| City of Galveston, Purchasing |
53 |
| AeroMexico Airlines |
53 |
| GCIC - Gulf Coast Ignition Corp |
53 |
| MONTGOMERY ISD |
52 |
| Synagro Technologies, Inc. |
52 |
| Harris County - District Clerk's Office |
52 |
| Tudor, Pickering, Holt & Co. Securities, Inc. |
52 |
| Franklin Isd (198-903) |
52 |
| Suncoast Post-Tension, LP. |
51 |
| Matson Driscoll |
51 |
| PathFinder Energy Services Inc |
51 |
| Fisk Corporation |
50 |
| TeleCheck International, Inc. |
50 |
| Texas First Bank |
50 |
| Vitol S.A., Inc. |
50 |
| Friendswood IDS |
49 |
| South Texas College Of Law |
48 |
| Houston Grand Opera Association, Inc |
48 |
| NACE International |
48 |
| City of Baytown, Texas |
48 |
| WALDEMAR S. NELSON and COMPANY Inc |
48 |
| Tauber Oil Company |
47 |
| Texas Medical Center, University of Texas, Houston |
47 |
| Plant Automation Services, Inc. |
47 |
| W-H Energy Services, Inc. |
46 |
| ATP Oil & Gas Corporation |
46 |
| Page Southerland Page, LLP |
46 |
| C R C - Evans Pipeline International Inc |
46 |
| W&T Offshore Inc |
46 |
| Barwil Unitor Ships Service |
46 |
| Computer Tech |
45 |
| Enventure Global Technology |
45 |
| Petron Industries Inc. |
45 |
| Kirksey |
45 |
| Stress Engineering Services Inc. |
45 |
| International Paint LLC |
44 |
| Yancey Hausman |
44 |
| Port Arthur Independent School District |
44 |
| CyrusOne Networks, LLC |
43 |
| Gulf Publishing |
43 |
| Tindall and Foster PC |
43 |
| ACR Group, Inc. |
42 |
| Crane Energy Flow Solutions |
42 |
| Maxxam |
42 |
| NexTec Group, Inc. |
42 |
| Awty International School |
42 |
| Argus Financial Software |
41 |
| Link Staffing Services |
41 |
| DICKINSON ISD |
41 |
| Igloo Products Corporation |
41 |
| Logan Oil Tools, Inc. |
41 |
| Hoerbiger America Rings |
41 |
| KUHF FM |
41 |
| Wild Well Control, Inc. |
40 |
| Memorial Hermann Baptist Hospital |
40 |
