Staggeringly powerful macOS desktop automation with Lua

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

A window management application (replacement for Divvy/SizeUp/ShiftIt)

The ultimate API for iOS & OS X Auto Layout — impressively simple, immensely powerful. Objective-C and Swift compatible.

Three20 is an Objective-C library for iPhone developers

Easy to use CFNetwork wrapper for HTTP requests, Objective-C, Mac OS X and iPhone

Managing windows size and position in OSX

Xcode plugin for Vim keybindings

Reveal side ViewControllers similar to Facebook/Path's menu

Programmers' editor for OS X [DEAD PROJECT]

IRC Client for Mac

Making Auto Layout easier to code.

TextMate plugin (Cocoa) shell for running 'ack'

Objective-C interactive regular expression validator and tester for OS X.

A minimap plugin for TextMate.

A WebKit plugin written in MacRuby, adding ruby power to the web kid!

An iPhone Hacker News client that Doesn't Suck.