iOS Stack - A curated collection of iOS resources for app builders
iOSStash - A huge collection of app-related tools
iOS Cookies - A hand curated collection of iOS libraries written in Swift
Localytics - App analytics and marketing for iPhone, iPad, Android, HTML5, Blackberry and Windows apps.
Zeroqode API Tools - Biggest Library of ready-made API Collections for Postman
TreSensa - TreSensa makes and distributes playable advertisements to promote the world's top brands and mobile games.