| 1 (80) | United States Department of Agriculture | USA |  |
| 2 (115) | National Aeronautics and Space Administration * | USA | |
| 3 (124) | Lawrence Berkeley National Laboratory | USA | |
| 4 (262) | National Center for Biotechnology Information | USA | |
| 5 (300) | Los Alamos National Laboratory | USA | |
| 6 (311) | Doe Joint Genome Institute | USA | |
| 7 (318) | National Institute of Standards and Technology * | USA | |
| 8 (320) | Oak Ridge National Laboratory | USA | |
| 9 (331) | U.S. Army | USA | |
| 10 (348) | Argonne National Laboratory | USA | |
| 11 (400) | United States Geological Survey | USA | |
| 12 (415) | National Oceanic and Atmospheric Administration | USA | |
| 13 (438) | National Center for Atmospheric Research | USA | |
| 14 (457) | Lawrence Livermore National Laboratory | USA | |
| 15 (481) | Pacific Northwest National Laboratory | USA | |
| 16 (493) | Smithsonian Institution | USA | |
| 17 (494) | National Renewable Energy Laboratory | USA | |
| 18 (526) | Sandia National Laboratories, New Mexico | USA | |
| 19 (541) | NASA Goddard Space Flight Center | USA | |
| 20 (573) | Jet Propulsion Laboratory | USA | |
| 21 (619) | Brookhaven National Laboratory | USA | |
| 22 (631) | US Naval Research Laboratory | USA | |
| 23 (634) | U.S. Food and Drug Administration | USA | |
| 24 (637) | U.S. Air Force | USA | |
| 25 (717) | US Environmental Protection Agency | USA | |
| 26 (749) | SLAC National Accelerator Laboratory | USA | |
| 27 (848) | World Bank United States | USA | |
| 28 (888) | Joint Quantum Institute | USA | |
| 29 (900) | Ames Laboratory | USA | |
| 30 (1045) | NASA Ames Research Center | USA | |
| 31 (1123) | NASA Goddard Institute for Space Studies | USA | |
| 32 (1188) | University of Maryland, Center for Environmental Science | USA | |
| 33 (1189) | Space Telescope Science Institute | USA | |
| 34 (1197) | National High Magnetic Field Laboratory | USA | |
| 35 (1222) | American Museum of Natural History | USA | |
| 36 (1263) | NASA Langley Research Center | USA | |
| 37 (1386) | Fermi National Accelerator Laboratory | USA | |
| 38 (1446) | Armed Forces Institute of Pathology | USA | |
| 39 (1533) | National Optical Astronomy Observatory | USA | |
| 40 (1551) | Spitzer Science Center | USA | |
| 41 (1606) | National Energy Technology Laboratory | USA | |
| 42 (1611) | U.S. Department of Energy | USA | |
| 43 (1629) | Princeton Plasma Physics Laboratory | USA | |
| 44 (1954) | Joint Institute for Laboratory Astrophysics | USA | |
| 45 (2011) | Field Museum Natural History | USA | |
| 46 (2176) | National Radio Astronomy Observatory, Charlottesville | USA | |
| 47 (2286) | Infrared Processing and Analysis Center | USA | |
| 48 (2359) | Nemours A Children's Health System | USA | |
| 49 (2464) | Thomas Jefferson National Accelerator Facility | USA | |
| 50 (2717) | National Radio Astronomy Observatory, Socorro | USA | |
| 51 (2827) | Idaho National Laboratory | USA | |
| 52 (3005) | NASA Stennis Space Center | USA | |
| 53 (3017) | US National Science Foundation | USA | |
| 54 (3114) | NASA Johnson Space Center | USA | |
| 55 (3157) | Naval Air Systems Command | USA | |
| 56 (3241) | Glenn Research Center | USA | |
| 57 (3368) | NASA Marshall Space Flight Center | USA | |
| 58 (3876) | United States Fish and Wildlife Service | USA | |
| 59 (4162) | NASA Kennedy Space Center | USA | |
| 60 (4262) | Missouri Botanical Garden | USA | |
| 61 (4466) | Savannah River National Laboratory | USA | |
| 62 (4524) | Federal Aviation Administration | USA | |
| 63 (4893) | Nuclear Regulatory Commission | USA | |
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