Anim - Swift animation library for iOS, tvOS and macOS.
Alomofire - Elegant HTTP Networking.
Runtime - Swift Runtime library for viewing type info, and the dynamic getting and setting of properties.
MerchantKit - Modern In-App Purchases management framework for iOS.
Swift tagged - Library for safer types.
Login Critter - Animated avatar that responds to text field interactions.
Pixel - Image editor and engine using CoreImage.