If you would like to add a site to the Directory, just email us at ahwupdate at gmail dot com with the name of the site and a link to it.
Alternatehistory.com - An active alternate history discussion board on the Internet.
alternate-history - The Yahoo group on alternate history.
Alternate History Fiction Forum - forum affiliated with Infinity Wanderers.
Counter-Factual.Net - Community with forum and zine.
History Alternate - a place for historical what if discussion.
The Sideways Multiverse Club at Tribe.
S. M. Stirling Discussion Group - A Yahoo discussion group for the books of author S. M. Stirling.
soc.history.what-if - The usenet newsgroup on alternate history with over a decade of archives.
Alternate History Wiki - Alternatehistory.com's wiki. Not to be confused with the Wikia below.
Alternate History Wikia - Alternate History Wikia, maintained by Wikia.
Harry Turtledove Wiki - Wiki for the people, places, and events that are portrayed in the writings of Harry Turtledove.
Ill Bethisad Wiki - A shared universe focusing on various conlags.
Map Continuation - A collaborative world project set on designing a realistic planet from a common point of divergence.
Alternate History Fiction - Site for unpublished alternate history stories.
Black Shuck's Alternate History Page - Robert Brown's alternate history site.
The Burning Ages - Official Website of Sebastian P. Breit.
Clopton's Short History of the Confederate States of America - A thorough scenario about an independent Confederacy.
Dai Nippon Teikoku - A long scenario where a Russian-Japanese war occurs in 1939.
Das Dritte Reich - An alternate history project where Karl Jarres is elected President of Germany in 1925.
David Johnson's Webpage - David Johnson's alternate history site.
Decades of Darkness - Featured scenario where the United States has a civil war in the early 1800s and splits into two nations. Includes unrelated timeline called Lands of Red and Gold.
For All Time - Henry Wallace becomes President of the United States in 1941.
Gateway: Alternate World Timelines - Ian Montgomerie's alternate history site.
Histalt.com - Author Richard J. (Rick) Sutcliffe's collection of alternate history links.
Isaac's Empire - The Byzantine Empire survives and becomes a global superpower in the 18th century.
John Reilly's Alternative History - A collection of original stories and essays.
J.T.'s Alternate History Site - J.T. Tate's alternate history site.
My Alternate Histories - David K. Tormsen's alternate history site.
Other Timelines - Defunct website, but still a large archive of alternate history timelines.
Robert's Alternate History Place - Robert Perkins' alternate history site.
Shades of History
TILT! - A series of alternate Earths, playing with climatology, evolution, and cultural geography.
The Tony Jones Alternate History Page - Tony Jones' alternate history site.
What If? An Alternate History Site - This site will help answer the mysteries of how life would be if history was changed.
NOTE: Using the Wayback Machine of the Internet Archive, you can now read classic online AH that has otherwise been removed from the Internet.
Alternative History by Ed Thomas - Defunct author site, but can access through the Internet Archive.
What if Gordon Banks had Played? - Alternate history of the United Kingdom in the 1970s.
Cherie Priest's Official Blog
The Chrishanger - Official website of Chris Nuttall.
Dale Cozort's Alternate History - Official website of Dale Cozort.
Harry Turtledove Website - Official website of Harry Turtledove.
The Kim Newman & Eugene Byrne Alternate History Pages - Alternate history stories by Kim Newman and Eugene Byrne.
Notes From the Lizard Lair - Blog of author Deborah Teramis Christian.
smstirling.com - The official S. M. Stirling website.
Fan Fiction in SM Stirling's Universes - Fan fiction site for the works of S. M. Stirling. Moderated by Kier Salmon.
For All Nails - Fan fiction site for Robert Sobel's For Want of a Nail.
Alternate History Inquirer - Blog operated by Jake (Yelnoc) seeking to promote thoughtful discussion of "historical what-if" scenarios. Hosts the AH.com podcast.
An Alternate History of the Netherlands - A timeline that follows the evolution of a world in which the Dutch were not divided along religous lines during the Dutch Revolt of the last 16th Century.
Alternate History of the Space Age - Imagining space missions that might have been.
Alternate Timeline - This blog documents historical events or everyday occurrences that do not exist in our reality. If there is a point of divergence then it will be included.
Alternative Forces of WWII - The 'What Ifs' of WWII, including fantasy alternatives.
Captain Confederacy - Blog about the comic book superhero set in a timeline where the Confederacy won the American Civil War.
The Counterfactual History Review - Gavriel D. Rosenfeld's blog on counterfactual history.
Eric Flint’s place on the web - Author Eric Flint's blog.
Fake Fort Wayne - A fake history blog for Fort Wayne, IN.
Geeky SciFi - Is there any other kind?
Other Times - Blog with a focus on the results of plausible changed historical events or alternate decisions by historical figures.
Shattered World - A blog based on an alternate historical scenario containing an active forum and wiki.
This Day in Alternate History - Blog dedicated to showing significant events in years past on this day that shaped history... just, not our history.
Uchroniques - A French language alternate history blog.
The War Blog - Reviews and commentary on WWII fiction and non-fiction by Sebastian P. Breit.
World War III 1946 - A well-researched timeline involving World War III in 1946.
Alt Hist - An alternate history and historical fiction magazine edited by Mark Lord.
Changing the Times - An alternate history electronic magazine written and maintained by alternate historians. It contains a discussion board.
Paradox - The magainze of historical and speculative fiction.
Point of Divergence - an amateur press association devoted to alternate history.
AH.com Podcast - Podcast produced by various members of Alternatehistory.com.
Twilight Histories - History/Alternate history podcast by Jordan Harbour.
What If History - Podcast hosted by Nick and Brian.
Alternate History on TV Tropes
Alternate History on Wikipedia
Archaeology Daily News - Discover a World of Archaeology...
People Cartographer/Atlas: A tumblr blog with weird and alternate history maps.
Bibliophile Stalker - A blog on speculative fiction and my other hobbies such as tabletop RPGs and anime/manga.
Curated Science Fiction - Only the best science fiction (including alternate history) on the Internet.
The History of Things That Never Were - A collection of fictional timelines.
Fantasy Map - Freelance map maker for alternate history, science fiction and fantasy worlds.
Flags of the World - Internet’s largest site devoted to vexillology.
Footnotes to History - An encyclopedia of little-known or never-was nations.
Law and the Multiverse - Blog that discusses legal issues involving superheroes.
Portable Homeland - Literary blog.
Sidewise Awards for Alternate History - Homepage for the alternate history award announced at Worldcon every year.
SF Signal - Science fiction and fantasy weblog including news, reviews and points of view.
Uchronia: The Alternate History List - A bibliography of 3100 novels, stories, essays and other printed material involving the "what ifs" of history.