The first, largest and best Science Fiction Role Playing Game: Traveller. See milieu non-specific sites here, or click on your favorite version to see specialized sites.
Sites whose main thrust covers, supports or records games or ongoing campaigns. Most of these have supporting character, technology, encounter and location information that may be useful to parties outside of the gaming group involved.
Specificly for sites that support or chronicle Traveller games, either for players or the general gaming public.
Sites whose main thrust covers, supports or records games or ongoing campaigns. Most of these have supporting character, technology, encounter and location information that may be useful to parties outside of the gaming group involved.

T20

Web sites that support the d20 version of Traveller, known as T20.
Sites listed here must be completely or mainly dedicated to the T20 Traveller game version.