An open source iOS framework for GPU-based image and video processing

Realm is a mobile database: a replacement for Core Data & SQLite

Staggeringly powerful macOS desktop automation with Lua

A Cocoa / Objective-C wrapper around SQLite

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

Super Awesome Easy Fetching for Core Data!

MacOS system extension that allows applications to pass audio to other applications. Soundflower works on macOS Catalina.

A software update framework for macOS

Simple, modern, thread-safe key-value observing for iOS and OS X.

Remote network and data debugging for your native iOS app using Chrome Developer Tools

URL routing library for iOS with a simple block-based API

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

An iOS and macOS audio visualization framework built upon Core Audio useful for anyone doing real-time, low-latency audio processing and visualizations.

An easy way to fine-tune, and adjust parameters for iOS apps in development.

A Cocoa library to extend the Objective-C programming language.

Style iOS apps with a stylesheet, similar to CSS

iOS and Mac Cocoa library for communicating over USB

Bluepill is a reliable iOS testing tool that runs UI tests using multiple simulators on a single machine

A Fast, Open Source JavaScript, Canvas & Audio Implementation for iOS

Clean and simple clipboard manager for developers

Better playgrounds that work both for Objective-C and Swift

A sensible way to deal with XML & HTML for iOS & macOS

Small library of visual debugging tools for iOS.

Fork of Pieter's nice git GUI for OS X. Includes branch/tag sidebar and various fixes. Current development focus is on removing legacy git command line usage in favour of libgit2 and objective-git.

Remote configuration for iOS

Automated acceptance tests for native iOS apps

The Super Debugger, a realtime wireless debugger for iOS

Safe Method Swizzling.

Use a Bluetooth 4 enabled Mac running Mavericks (not Yosemite) as an iBeacon

Mac OS X app to automatically set your desktop wallpaper to the satellite view overhead.