BTB's X - Beyond the Frontier: Features maps showing products and resources, race rank lists, walkthrough covering objectives, navigation, trading, ships, factories, combat, pirates, and quests, and screen shots.
GameSpot: Offers review, hints, screen shots, and downloads.
Klarix's X: Contains sector trading tables and screen shots.
Mogsy's X Beyond the Frontier Support Base: Includes maps, walkthrough, and save game editing tips.