iTerm2 is a terminal emulator for Mac OS X that does amazing things.

An elegant messages UI library for iOS

Delightful, simple library for aspect oriented programming in Objective-C and Swift.

Xcode plug-in which helps you write documentation comment easier, for both Objective-C and Swift.

Runtime Code Injection for Objective-C & Swift

This is an app for OS X that can (re)sign apps and bundle them into ipa files that are ready to be installed on an iOS device.

XLForm is the most flexible and powerful iOS library to create dynamic table-view forms. Fully compatible with Swift & Obj-C.

A view controller for iOS that allows users to crop portions of UIImage objects

Re-write of Injection for Xcode in (mostly) Swift

iOS and Mac Cocoa library for communicating over USB

Open Source, 100% API compatible replacement of UICollectionView for iOS4.3+

Export images from OS X / iOS .car CoreUI archives

Chat SDK iOS - Open Source Mobile Messenger

Zulip legacy iOS app