StrategyWiki Alternatives
StrategyWiki is described as 'A collaborative and freely-licensed wiki for all your video game strategy guide and walkthrough needs! The guides here can be edited by anyone, so feel free to jump in and improve something!' and is an website. There are 2 alternatives to StrategyWiki, not only websites but also apps for Windows. The best alternative is GameFAQs, which is free.
GameFAQs is an online archive of video and computer game information, codes, walkthroughs, hints, message boards, save games files, and of course, FAQs.
CheatBook DataBase 2012 - The encyclopedia of game cheats.