DC
Artemis's Fanfiction, DC Heroes: World's Finest Fanfiction, JLA Unlimited, Shippers Anonymous, Superboy Lives, Wonder Woman Fan Fiction Archive
Marvel
Blu Fiction, Cosmic Powers Fan Fiction, eX -- An Online Fan Fiction Novel, Firebird's Marvel Fanfiction, Fonts of Wisdom, Generation X Fan Fiction, Lateo's Lair: X-Men Fanfiction Link Archive., Maria's X-Men Fan Fiction, MV1 Fanfiction Project, the arcHive
DarkMark's Domain
Stories of superheroes and characters from DC, Marvel and other companies.
Firebird's WebSite
Fan fiction about the Batman family, Titans, X-Men, Young Justice. Submissions accepted.
Grendel's Pond Bar and Grill
Joe Grendel, founding member of the Pantheon, roving antihero of the multiverse.
Heroes The Fan Fiction Magazine
A fan fiction ezine covering a variety of fan fiction with articles, news and interviews.
The Best of the NEB
The best stories from Comic Book Resources' Never Ending Board, as chosen by the readers.
The Fan-Fic Underground Message Board
Message board for both the discussion and posting of fan fiction. Requires registration.