Cydia - An alternative app store for jailbroken devices.
Altstore - A home for apps that push the boundaries on iOS
iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
Colorware iPhone Retro - A vintage, 80s-inspired iPhone
Hydia - Hydia is a non-jailbroken version of cydia wich allows you to customize your device in many ways.
MacMenuBar - A curated directory of 200+ Mac menu bar apps