Darcs is a free, open source source code management system.

Every user has access to the full command set, removing boundaries between server and client or committer and non-committers.

Darcs is easy to learn and efficient to use because it asks you questions in response to simple commands, giving you choices in your work flow. You can choose to record one change in a file, while ignoring another. As you update from upstream, you can review each patch name, even the full "diff" for interesting patches....

DownThemAll (or just dTa) is a powerful yet easy-to-use Mozilla Firefox extension that adds new advanced download capabilities to your browser.
DownThemAll lets you download all the links or images contained in a webpage and much more: you can refine your downloads by fully customizable criteria to get only what you really want....

xu‧ggle (zŭ' gl) v. To freely encode, decode, and experience audio and video.

With Xuggle you can write Java programs that decode or encode video.

It incorporates FFMPEG, but adds a simpler interface that is safe to use from Java-like languages (e.g. garbage collection) and tries hard to make sure usage of FFMPEG features doesn't crash a JVM....

YSlow for Firebug analyzes web pages and tells you why they're slow based on Yahoo's rules for high performance web sites.

Nautilus is a graphical shell for the GNOME desktop enviornment that makes it easy to manage your files and the rest of your system.

Lua is a powerful, fast, light-weight, embeddable scripting language.

Lua combines simple procedural syntax with powerful data description constructs based on associative arrays and extensible semantics. Lua is dynamically typed, runs by interpreting bytecode for a register-based virtual machine, and has automatic memory management with incremental garbage collection, making it ideal for configuration, scripting, and rapid prototyping....

Ghostscript is an interpreter for the PostScript language. A PostScript interpreter usually takes as input a set of graphics commands. The output is usually a page bitmap which is then sent to an output device such as a printer or display.

It also includes a graphics library and a PDF interpreter written in PostScript. It can act as a general vector graphics conversion engine, converting PostScript or PDF documents to other vector and raster formats....

A widely used free library for JPEG image compression.,

Arch Linux is a lightweight and flexible linux distribution that tries to Keep It Simple.

Official packages optimized for the i686 and x86-64 architectures are available. We complement our official package sets with a community-operated package repository that grows in size and quality each and every day....

Ibus (Intelligent Input Bus) is an input-method framework.,