Extensive wiki on the subject of alternate history.

Features articles, links to other alternative history websites, a web guide to alternate history, and a collection of hosted sites.

Alternate history e-zine publishing regular articles and stories.

Offering over a hundred timelines of events which never happened.

Examining a series of alternate Earths, playing with climatology, evolution, and cultural geography.

Presents alternate history in the popular blog format.

Offers a number of alternate history scenarios which were originally created in relation to role playing games.

An annotated bibliography of novels, stories, essays and other material involving the 'what ifs' of history.