Claws Mail is a powerful and full-featured mail client formerly called Sylpheed-Claws. It is also extensible using loadable plugins, which can provide support for additional features, like other storage formats, feed reader, calendar management, mail filtering, etc.

gbrainy is a platform to train memory, arithmetical and logical capabilities with many sorts of different exercises of different difficulty levels. It should have something for all ages and purposes: kids whose parents want them to develop their capabilities, adults that want to keep their mind in form or just try it out for fun, older people that might need to do some memory exercises, etc.

A real-time software synthesizer for Linux and Windows with many features, including polyphony, multi-timbral and microtonal capabilities. It includes randomness of some parameters, which makes warm sounds, like analogue synthesizers. It has system/insertion effects too, and much more.

GNOME Commander is a fast and powerful graphical filemanager for the GNOME desktop environment, it has a "two-pane" interface in the tradition of Norton and Midnight Commander.

Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon in the clamav-daemon package, a command-line scanner in the clamav package, and a tool for automatic updating via the Internet in the clamav-freshclam package. The programs are based on libclamav, which can be used by other software.