uWSGI presents a complete stack for networked/clustered web applications, implementing message/object passing, caching, RPC and process management. It uses the uwsgi protocol for all the networking/interprocess communications.

GStreamer is a streaming media framework, based on graphs of filters which operate on media data. Applications using this library can do anything from real-time sound processing to playing videos, and just about anything else media-related. Its plugin-based architecture means that new data types or processing capabilities can be added simply by installing new plug-ins.

Pecita is a hand-written font that give a natural rendition.

xdg-user-dirs is a tool to help manage "well known" user directories like the desktop folder and the music folder. It also handles localization (i.e. translation) of the filenames.

DXVK is a Vulkan-based translation layer for Direct3D 8/9/10/11 which allows running 3D applications on Linux using Wine.

A multi-machine emulator for platforms of Sega consoles (Master System and Game Gear) and compatible for all games.