10:47 at the coffee pot - A collection of interlinking short stories based around converging themes.
Couchbike: A Collaborative Novel - An online story of two guys riding around on a human powered couch. Open for anyone to contribute to.
Fiction Factory - Friends and family join together to create stories. Samples provided, free registration required to participate.
MurrayTime - Progressive novel from Australia.
PeppelliniPines.com - Interactive story based on characters provided and with a new storyline every week written by users.
The Story So Far... - A 'round the world' story in which each page is written by a new person, who then nominates the next writer.
Tag You're It Writing Community - Tag writing, where one person writes a bit of a story and another picks up where he/she left off.
Telling Lies - An exploration of truth and its apparent fragility in present culture and society.
The Tower - A collection of fictional stories and fan fiction by a group of amateur writers.
WovenWords - Interactive Stories, poems, wisdom, digital story telling.
WriteXcite - People all over the world write stories together, in several categories including thriller, horror, fantasy, detective, science fiction and poetry.