| 1 (133) | National Bureau of Economic Research | USA |  |
| 2 (301) | Santa Fe Institute | USA | |
| 3 (361) | Institute for Advanced Study | USA | |
| 4 (395) | International Computer Science Institute | USA | |
| 5 (408) | American Institute of Aeronautics and Astronautics | USA | |
| 6 (415) | Carnegie Institution for Science | USA | |
| 7 (472) | Kavli Institute for Particle Astrophysics and Cosmology | USA | |
| 8 (514) | Perimeter Institute for Theoretical Physics | CAN | |
| 9 (554) | Woods Hole Oceanographic Institution | USA | |
| 10 (590) | RAND Corporation | USA | |
| 11 (609) | Regenstrief Institute | USA | |
| 12 (770) | SRI International | USA | |
| 13 (985) | Wildlife Conservation Society USA | USA | |
| 14 (1034) | Marine Biological Laboratory | USA | |
| 15 (1640) | International Monetary Fund | USA | |
| 16 (1659) | Desert Research Institute, Reno | USA | |
| 17 (1690) | Monterey Bay Aquarium Research Institute | USA | |
| 18 (1785) | Universities Space Research Association | USA | |
| 19 (2408) | Southwest Research Institute | USA | |
| 20 (2764) | Louisiana State University Agricultural Center | USA | |
| 21 (2855) | Battelle Memorial Institute | USA | |
| 22 (3541) | Electric Power Research Institute | USA | |
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