Installer - Installer is a package manager build specifically for iOS. Older versions of Installer are Open Source
The Influencer Marketing Stack - Free resources to launch a killer campaign
Cydia - An alternative app store for jailbroken devices.
Startup Stash - A curated directory of 400 resources & tools for startups
iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
Makerbook - A directory of the best free resources for creatives