iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
TSF5 - TSF5 stands for thesilverfox5. TSF5 is a multiplatformed multiapp!
Cydia - An alternative app store for jailbroken devices.
BuildStore - Safe and trustworthy alternative app store for iOS
Apple App Store - Install apps on your iDevice via the App Store.
OpenAppMkt.mobi - OpenAppMkt.mobi is an app store for HTML5 mobile apps.