KWin (pronounced as one syllable "kwin") is the window manager for the KDE Plasma Desktop. It gives you complete control over your windows, making sure they're not in the way but aid you in your task. It paints the window decoration, the bar on top of every window with (configurable) buttons like close, maximize and minimize. It also handles placing of windows and switching between them.

Proxy chains force any tcp connection made by any given tcp client to follow through proxy (or proxy chain). It is a kind of proxifier. It acts like sockscap / premeo / eborder driver ( intercepts TCP calls )

This library can be used to classify files according to magic number tests. It implements the core functionality of the file command.

This is a collection of useful tools that Ubuntu developers use to make their packaging work a lot easier.

VDPAU (Video Decode and Presentation API for Unix) is an open source library (libvdpau) and API designed by NVIDIA originally for its GeForce 8 series and later GPU hardware, targeted at the X Window System on Unix operating-systems (including Linux, FreeBSD, and Solaris). This VDPAU API allows video programs to offload portions of the video decoding process and video post-processing to the GPU video-hardware.

QtWebKit provides a Web browser engine that makes it easy to embed content from the World Wide Web into your Qt application.