Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports.

A cross-platform protocol library to communicate with iOS devices

A DevTools proxy (Chrome Remote Debugging Protocol) for iOS devices (Safari Remote Web Inspector).

Convert terminal recordings to animated gifs

Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.

Tup is a file-based build system.

mon(1) - Simple single-process process monitoring program written in C

Full network stack over sound -- lwIP driver for libquiet

MobileDevice Implementation

Run app on iDevice using libimobiledevice and com.apple.debugserver service