atool is a script for managing file archives of various types (tar, tar+gzip, zip, etc).

The main command is probably 'aunpack' which extracts files from an archive. It overcomes the dreaded "multiple files in archive root" problem by first extracting to a unique subdirectory, and then moving back the files if possible.

aunpack also prevents local files from being overwritten by mistake. Other commands provided are apack (for creating archives), als (for listing files in archives), and acat (for extracting files to stdout).

Crayonizer is a command-line app that "crayonizes" (i.e. colors in) the output of other command-line apps. It's written in straight-C with few dependancies.

Twin is a text-mode window environment. It supports mouse and multiple windows, has a built-in terminal emulator and window manager, and can serve as display for client applications. Its retro look-and-feel comes with very modern features: it is best described as a VNC-like server, that can use a variety of displays - all with mouse support: from a plain text terminal, to a Linux console, to a full kde, gnome or X11 desktop.

Vifm is a ncurses based file manager with vi like keybindings that allow complete keyboard control over your files without having to learn a new set of commands. It supports UTF-8, a quick file view similar to midnight commander's quick view, and configurable color schemes.