Nulloy is a cross-platform music player with a waveform seek bar, skins, support for many audio formats (MP3, FLAC, OGG, WMA, AIFF, etc.), tags, and cover art.
Humm and Strumm is a project to create a high-performance, concurrent 3D video game engine in modern C++.
A Thread-safe quad tree C library.
Additional Netfilter/iptables modules.