| 1 (74) | United States Department of Agriculture | USA |  |
| 2 (166) | U.S. Army | USA | |
| 3 (186) | Lawrence Berkeley National Laboratory | USA | |
| 4 (301) | U.S. Food and Drug Administration | USA | |
| 5 (335) | Doe Joint Genome Institute | USA | |
| 6 (366) | University of Maryland Biotechnology Institute | USA | |
| 7 (423) | National Aeronautics and Space Administration * | USA | |
| 8 (452) | National Institute of Standards and Technology * | USA | |
| 9 (455) | US Naval Research Laboratory | USA | |
| 10 (475) | Sandia National Laboratories, New Mexico | USA | |
| 11 (518) | National Renewable Energy Laboratory | USA | |
| 12 (522) | Pacific Northwest National Laboratory | USA | |
| 13 (532) | Oak Ridge National Laboratory | USA | |
| 14 (538) | National Center for Biotechnology Information | USA | |
| 15 (597) | Los Alamos National Laboratory | USA | |
| 16 (621) | U.S. Air Force | USA | |
| 17 (647) | Lawrence Livermore National Laboratory | USA | |
| 18 (713) | Argonne National Laboratory | USA | |
| 19 (871) | Armed Forces Institute of Pathology | USA | |
| 20 (1123) | Jet Propulsion Laboratory | USA | |
| 21 (1148) | Brookhaven National Laboratory | USA | |
| 22 (1391) | National Energy Technology Laboratory | USA | |
| 23 (1433) | U.S. Department of Energy | USA | |
| 24 (1715) | US Environmental Protection Agency | USA | |
| 25 (1861) | Glenn Research Center | USA | |
| 26 (1922) | Ames Laboratory | USA | |
| 27 (1959) | Nemours A Children's Health System | USA | |
| 28 (1992) | NASA Ames Research Center | USA | |
| 29 (2097) | NASA Langley Research Center | USA | |
| 29 (2097) | Naval Air Systems Command | USA | |
| 31 (2194) | National High Magnetic Field Laboratory | USA | |
| 32 (2218) | NASA Stennis Space Center | USA | |
| 33 (2574) | Idaho National Laboratory | USA | |
| 34 (2704) | US National Science Foundation | USA | |
| 35 (2727) | SLAC National Accelerator Laboratory | USA | |
| 36 (2740) | NASA Goddard Space Flight Center | USA | |
| 37 (2854) | NASA Johnson Space Center | USA | |
| 38 (2861) | National Oceanic and Atmospheric Administration | USA | |
| 39 (2887) | Thomas Jefferson National Accelerator Facility | USA | |
| 40 (2900) | United States Geological Survey | USA | |
| 41 (2927) | Savannah River National Laboratory | USA | |
| 42 (3138) | University of Maryland, Center for Environmental Science | USA | |
| 43 (3159) | Joint Institute for Laboratory Astrophysics | USA | |
| 44 (3414) | NASA Kennedy Space Center | USA | |
| 45 (3497) | National Center for Atmospheric Research | USA | |
| 46 (3521) | NASA Marshall Space Flight Center | USA | |
| 47 (3536) | Missouri Botanical Garden | USA | |
| 48 (3715) | Joint Quantum Institute | USA | |
| 49 (3906) | Princeton Plasma Physics Laboratory | USA | |
| 50 (3947) | Fermi National Accelerator Laboratory | USA | |
| 51 (3965) | American Museum of Natural History | USA | |
| 52 (4047) | Smithsonian Institution | USA | |
| 53 (4177) | NASA Goddard Institute for Space Studies | USA | |
| 54 (4184) | National Optical Astronomy Observatory | USA | |
| 55 (4200) | National Radio Astronomy Observatory, Charlottesville | USA | |
| 56 (4304) | Field Museum Natural History | USA | |
| 57 (4319) | World Bank United States | USA | |
| 58 (4326) | Space Telescope Science Institute | USA | |
| 59 (4328) | Spitzer Science Center | USA | |
| 59 (4328) | United States Fish and Wildlife Service | USA | |
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