Conjoiner.org - User driven online community for science fiction and fantasy fans. Offers news, forums, book reviews, galleries and downloads.
The Fanac Fan History Project - An archive of texts, photographs and artwork relating to the history, development, people and culture of science fiction fandom.
FanGalaxy.com - Online community for Science Fiction, Fantasy, and Speculative Fiction fans offers news, discussion boards, and searchable databases of SF conventions, SF web sites, and SF literature.
Fannish E-Mail Directory - A directory of more than 3,000 electronic addresses and web sites of fans, professionals and groups located throughout the world.
Fantastik - Association for the fantastic genres in all media (danish/english).
Mars7 - International Sci-Fi and Fantasy Community based in York, UK. Their website features a weekly quiz, picture gallery, fan fiction, reviews, chat, scoreboards, writing competitions, links, top 20 competition, and mailing list.
MarsDust Online - Online fandom lifestyles magazine covering the worlds of horror, scifi and fantasy entertainment.
Rotsler.com - Bill Rotsler was fandoms most prolific illustrator. For over fifty years, he drew many thousands of cartoons and gave them away to fanzine editors for inclusion in their publications. Now, an online archive of his work has been created.
Swill Online - The twentieth anniversary revival of the magazine Swill, originally published in 1981, which is devoted to attacking science fiction fandom.