An iOS/OSX bridge for sending messages between Obj-C and JavaScript in UIWebViews/WebViews

RestKit is a framework for consuming and modeling RESTful web resources on iOS and OS X

Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. Nice GUI for lsof.

iOS library for quickly displaying images while scrolling

UITextField subclass with floating labels - inspired by Matt D. Smith's design: http://dribbble.com/shots/1254439--GIF-Mobile-Form-Interaction?list=users

Runtime Code Injection for Objective-C & Swift

Objective-C JSON

OS X menubar status indicator

Bolts is a collection of low-level libraries designed to make developing mobile apps easier.

This framework implements a strict JSON parser and generator in Objective-C.

Nu is an interpreted Lisp that builds on the Objective-C runtime and Foundation framework.