Cydia - An alternative app store for jailbroken devices.
iOSGODS! - iOSGODS!
BuildStore - Safe and trustworthy alternative app store for iOS
5play.ru - 5play.ru enables you to download highly-rated Apps and Games for Android devices.
Hydia - Hydia is a non-jailbroken version of cydia wich allows you to customize your device in many ways.
Altstore - A home for apps that push the boundaries on iOS