Alternate Histories: What if the events in all those science fiction movies really did take place? When did they happen? This site will tell you when.
Alternate History Discussion: The largest alternate history discussion forum on the web, plus a directory of individual scenarios sorted by era.
Alternate History Travel Guides: Over 25 Travel Guides, one pocket guide, and one Interdimensional Brewpub Tour, four worlds and counting.
Alternate History Wiki: Exhibits pages related to alternate histories.
B-49 Alternate History: Speculates on how military aviation history would have been different if the project had not been cancelled.
Changing The Times: An electronic magazine comprising of news, opinions, services and features.
Dale Cozort's Alternate History Page: "I do four things in this section: 1.Point to some good but obscure alternate histories. 2.Give links to a few good alternate history sites. 3.Hype my alternate history stories. 4.Toss out a couple of "alternate history scenarios of the month" for email discussion. "
Dave's Alternate History Site: Alternate history scenarios concerning Europe, America, Asia from the 1600s-1990s.
David Atwell's Alternative History: Several alternate history scenarios featuring Britain, George W. Bush, and more.
David Johnson's webpage: Mostly noteworthy for the long "TrolleyWorld" scenario, also has parts of zines from Point of Divergence.
Decades of Darkness: History of an evil USA dominated by slave owners.
For All Time: A very long and detailed dystopia resulting from the death of FDR shortly after Pearl Harbor.
History from the Closet: Finding the hidden truth through short history and archaeology tales.
John J. Reilly's Alternative History: Contains various short speculative essays.
Point Of Divergence: An Alternate-History Amateur Press Association. A forum for discussion of ideas, and a story workshop for Alternate History Writers.
Polish Zioty's Alternate History Page: A fun and interesting way of looking at how history could have been.
Shattered World: An extremely detailed World War 2 alternate history, with its own discussion board.
Sideways: An anthology web comic strip that focuses on alternate history/reality. Also provides a showcase for alternate history stories.
Surreal History: Includes CSA Today, Balkanized North America and Moslem Australia.
The Path Not Taken: Thoughts, scenarios and speculations on variety of time-lines and turning points.
The Uchronìcles: Counterfactual literature, Nero Italiano and Chaos Goddess, including Today in History and a blog.
This Day in Alternate History: A daily calendar with at least one alternate history scenario per day. Input on the scenarios or suggestions for new scenarios welcome.
Today In Alternate History: Blog that features important events in history that never occurred today. Created by Robbie Taylor of College Station, Texas.
Uchronia: The Alternate History List: An annotated bibliography of novels, stories, essays and other material involving the 'what ifs' of history.
Union Lost: Features two alternate history scenarios.
Von Braun Dreams: Alternative history discussion about the development of rocketry.
What If Gordon Banks had Played?: A British alternate history timeline, resulting from a different result in a 1970 football match, but leading to totalitarianism and war.