| Black Scifi Horror Fantasy Club: Black scifi, horror, and fantasy online club. |
| Broad Universe: Advocates of science fiction written by females. |
| Delphi's SF Literature Forum: A Delphi Forums community of science fiction and fantasy readers and writers. Home of the Wednesday Night Irregulars chat, a Delphi fixture since 1985. |
| MIT Science Fiction Society: Site includes information on the Society's library (including e-texts), meeting minutes and activities reports, as well as a description of membership benefits and links to sci-fi sites. |
| Point Of Divergence: Alternate-History association. Contains a forum for discussion of ideas, and a story workshop for alternate history writers. |
| Science Fiction Foundation: UK association of writers, academics, critics and others with an active interest in science fiction. Information about the research library in Liverpool, the review journal Foundation, and current activities. |
| The Speculative Literature Foundation: Working to promote literary quality in speculative fiction. Site has frequently asked questions, news, resources, and information on their programs and grants. |
Classical
