Stargatefan, started in 1997, is a large fansite devoted to Stargate SG-1 and Stargate Atlantis that features fic, art, links, historical information relevant to the show, and other resources for fans.
In 2013, the Organization for Transformative Works announced that Open Doors would assist StargateFan in preserving over 2,000 stories, fan art, and comics to their own collection on AO3. The import was completed in August 2017.
Read (or edit!) the Stargatefan page on Fanlore.