WeMod - Personalize your gaming experience Thousands of free mods and trainers for your favorite single-player PC games — all in one place.
AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
Cheat Engine - Cheat Engine is an open source memory scanner/hex editor/debugger for Windows.
Cydia - An alternative app store for jailbroken devices.
GameCopyWorld - An index for Game Backup Instructions, No CD Patches, and Game Trainers
Fnd - Browse Apple App Store and iTunes on the Web