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. "
http://members.aol.com/dalecoz/dale2.htm

Point Of Divergence
An Alternate-History Amateur Press Association. A forum for discussion of ideas, and a story workshop for Alternate History Writers.
http://www.marmotgraphics.com/pod/

Uchronia: The Alternate History List
An annotated bibliography of novels, stories, essays and other material involving the 'what ifs' of history.
http://www.uchronia.net/

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.
http://members.aol.com/JCooper652/Histories/

Surreal History
Includes CSA Today, Balkanized North America and Moslem Australia.
http://users.erols.com/mwhite28/what-if.htm

Polish Zioty's Alternate History Page
A fun and interesting way of looking at how history could have been.
http://www.angelfire.com/tx3/althistory/

Sideways
An anthology web comic strip that focuses on alternate history/reality. Also provides a showcase for alternate history stories.
http://timeliketoons.tripod.com/sideways.htm

B-49 Alternate History
Speculates on how military aviation history would have been different if the project had not been cancelled.
http://www.ninfinger.org/~sven/models/rms_tips/b49alt.hist.html

Today In Alternate History
Weblog that features important events in history that never occurred today. Created by Robbie Taylor of College Station, Texas.
http://althistory.blogspot.com/

Alternate History Discussion
The largest alternate history discussion forum on the web, plus a directory of individual scenarios sorted by era.
http://alternatehistory.com

David Johnson's webpage
Mostly noteworthy for the long "TrolleyWorld" scenario, also has parts of zines from Point of Divergence.
http://home.earthlink.net/~trolleyfan/

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.
http://www.othertimelines.com

For All Time
A very long and detailed dystopia resulting from the death of FDR shortly after Pearl Harbor.
http://foralltime.alternatehistory.com

Union Lost
Features two alternate history scenarios.
http://www.angelfire.com/alt2/unionlost/

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.
http://www.btinternet.com/~chief.gnome

David Atwell's Alternative History
Several alternate history scenarios featuring Britain, and George W. Bush.
http://www.geocities.com/dma1.geo/ah.html

Von Braun Dreams
Alternative history discussion about the development of rocketry.
http://www.geocities.com/duppim/vbdreams.html

Decades of Darkness
History of an evil USA dominated by slave owners.
http://decadesofdarkness.alternatehistory.com

John J. Reilly's Alternative History
Contains various short speculative essays.
http://www.johnreilly.info/althis.htm

Shattered World
An extremely detailed World War 2 alternate history, with its own discussion board.
http://www.shatteredworld.net/

The Uchronìcles
Counterfactual literature, Nero Italiano and Chaos Goddess, including Today in History and a weblog.
http://www.giampietrostocco.it

Changing The Times
An electronic magazine comprising of news, opinions, services and features.
http://www.changingthetimes.net

History from the Closet
Finding the hidden truth through short history and archaeology tales.
http://historyfromthecloset.blogspot.com

Alternate History Wiki
Exhibits pages related to alternate histories.
http://althistory.wikia.com/wiki/Main_Page