Alpha Centauri Area: Downloads, scenarios and FAQ.
Alpha Centauri Heaven: Reviews, resources, and information on the various factions.
Apolyton CS - Sid Meier's Alpha Centauri: Game encyclopedia, strategies, interviews, downloads, chat rooms and transcripts, fan fiction, hall of fame, and message boards.
Firaxis - Alpha Centauri: Official site, including news, features, and a gallery of screenshots from the game.
Game Revolution: Alpha Centauri Cheats and Hints: List of possible cheats.
GameSpot: Includes review, news, downloads, screen shots, cheats, and FAQs.
Loki: Sid Meier's Alpha Centauri: Basic information on the Linux port, from the now-defunct Loki Games.
Sid Meier's Alpha Centauri Game Guide: Designer diary, strategies, and discussion on best units.
SMAC/X Active Players: A database of Alpha Centauri and Alien Crossfire Players oriented towards finding other players, technology trees, strategies and pictures.
The Arrival: News, game information, fan fiction, downloads, news, multiplayer ads, tips, cheats, message board, and a chat room.
The Complete Alpha Centauri Quotebook: Compilation of the quotes used in gameplay.