SmartGit/Hg is a graphical user interface for Git and Mercurial which can work with SVN repositories. It supports cloning from common repository providers (e.g., GitHub, Assembla), assists Git newbies, and also offers the advanced, powerful Git features. It provides several tools to help create clean commits, for example by allowing the user to commit just parts of changes files and reordering and squashing unpushed commits. If you are using GitHub or GitHub Enterprise, SmartGit/Hg can work easily with pull requests (creation, resolving) and commit comments. SmartGit/Hg ships with a built-in SSH client, file comparer, and merge tool which are capable of syntax coloring for many languages.
GTK, which stands for the Gimp ToolKit, is a library for creating graphical user interfaces. It is designed to be small and efficient, but still flexible enough to allow the programmer freedom in the interfaces created. GTK provides some unique features over standard widget libraries.
The Extended Module Player is a command-line mod player for Unix-like systems that plays over 90 mainstream and obscure module formats from Amiga, Atari, Acorn, Apple IIgs, C64, and PC, including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM), and Impulse Tracker (IT) files.