| International Numerical Relativity Group: Uses supercomputers to study black holes, gravitational waves, and other phenomena predicted by Einstein's Theory of General Relativity. |
| APS Topical Interest Group on Gravitation: Includes a brief description of the group as well as its newsletters. |
| Australasian Society for General Relativity and Gravitation: Includes a newsletter, information on events, and links to related research groups. |
| Cambridge Relativity Group: Includes links to relevant conference announcements, brief descriptions of research areas, staff list and a publications index. |
| Center of Applied Space Technology and Microgravity: Gravitation and relativity theory within the German Physical Society. |
| Cosmology at the University of Kentucky: The group is primarily interested in the numerical simulation of large-scale structure formation and the development of robust statistical measures for describing the resulting distribution |
| LIGO Home Page: The Laser Interferometer Gravitational-Wave Observatory (LIGO) project is a pioneering effort to design and construct a novel scientific facility - a gravitational-wave observatory - that will open a new observational window on the universe. |
| London Relativity Seminars: List of lectures given in the Relativity and Cosmology seminar series at the School of Mathematical Sciences of Queen Mary, University of London. |
| Max-Planck-Institut für Gravitationsphysik: The Albert-Einstein-Institut (AEI), in Potsdam, is an institute of the Max-Planck-Gesellschaft, and carries out research in gravitational physics. |
| Pennsylvania State University: Centers of Gravity: Includes lists of staff, publication lists, visitor information and event announcements, as well as brief descriptions of the research undertaken. |
| Pennsylvania State University: Institute of Gravity: Includes lists of staff, publications lists, visitor information and event announcements, as well as brief descriptions of the research undertaken. |
| Pittsburgh Relativity Group: Includes links to relevant conferences and magazine articles, a list of staff and online copies of paper preprints and theses. |
| Queen Mary - QMW Hyperspace GR: A set of hypertext based services for general relativity research provided by the QMW Relativity group |
| Stanford U. - Gravity Probe B: Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity. |
| Syracuse Relativity Group: Includes staff information, descriptions of research being undertaken, information on colloquia and brief descriptions of relevant courses. |
| U. Cape Town, South Africa: |
| University of Texas at Austin - Center for Relativity: Includes a staff list, information on projects, seminar and publication lists, and related software information. |
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