the xine video player, GTK+/Gnome

gxineplugin

the xine video player, GTK+/Gnome; launcher plugin for Mozilla

This is a GTK+ based GUI for the libxine video player library. It provides gxine, a media player that can play all the audio/video formats that libxine supports. Currently, this includes MPEG1/2, some AVI and Quicktime files, some network streaming methods and disc based media (VCD, SVCD, DVD). A more complete list can be found on http://xinehq.de/.
XMMS2 client for the GNOME desktop

gxmms2

XMMS2 client for the GNOME desktop

gxmms2 is a GTK2-based XMMS2 client, written in C. Its main window is small and simple. It includes a playlist editor with a medialib search and an artist browser and a file information dialog.
GTK+ frontend for xneur keyboard layout switcher

gxneur

GTK+ frontend for xneur keyboard layout switcher

gXNeur runs in system tray and shows XNeur's state. It also allows one to configure XNeur via GUI dialog.
Receive/send radio facsimile transmissions with Soundcard/PTC-II

hamfax

Receive/send radio facsimile transmissions with Soundcard/PTC-II

With this package you can send or receive radio facsimile transmissions using either a Linux-supported soundcard or an SCS PTC-II data controller.
postage payment scheme for email based on hash calculations

hashcash

postage payment scheme for email based on hash calculations

Hashcash is a payment scheme that uses CPU cycles as the form of payment. This can be used as a counter-measure for junk email (spam) by using the hashcash token as a proof of payment for each email that you sent.
http://sourceforge.net/projects/xmds/

xmds

eXtensible Multi-Dimensional Simulator