A delightful networking framework for iOS, macOS, watchOS, and tvOS.

Darwin/macOS emulation layer for Linux

The Git interface you've been missing all your life has finally arrived.

An easy way to add a simple, shimmering effect to any view in an iOS app.

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

NewsBlur is a personal news reader that brings people together to talk about the world. A new sound of an old instrument.

ResearchKit is an open source software framework that makes it easy to create apps for medical research or for other research projects.

Open source code for the idevrecipes.com blog

Quicksilver Project Source

ControlPlane - context-sensitive computing for OS X

Create UIImage / NSImage instances with NSString and ASCII art

Layershots converts your iOS screenshot into a layered photoshop (PSD) file.

An open-source iOS personal analytics tool

Mac Programmers Text Editor

The iReddit iPhone app

iOS Support Framework

the best machine learning tutorials on the web

SNTP implementation for iOS

iOS drop-in library presenting a 2048-style game

Distributed version control + object persistence framework

Source code from the book HTML5 Game Engines

Hive Bitcoin wallet for the Mac (UNMAINTAINED)

Inbox.framework for iOS and related examples, sample code, and documentation

Minimal, robust iTunes scrobbling

iMeme is a popular meme generator for Mac OS X

Tested, working functional programming tools for MATLAB. Yes, really.