xbmcmail-imap is an IMAP/IMAPS email reader for the XBox using the XBox Media Center's builtin Python engine. It supports attachments, folders, mail management (copy, move, delete), printing (text or postscript), multiple accounts, background polling, RTF and HTML converters, and more.
xbmsd is a file sharing daemon that uses the Xbox Media Streaming Protocol (XBMSP) supported by the Xbox Media Center. It also supports the XBMSP Server Discovery Protocol (XBSDP). Its main features are mapping files to arbitrary local files or HTTP files/streams, support for filetype-specific, "synthetic" mplayer configuration files, and support for filtering files with arbitrary programs, which can, for example, re-encode media files on the fly.
xcw is a small utility that makes it possible to input text into any X11 program with a Morse key. It reads Morse from a straight or iambic key connected to a serial port, decodes it, then sends the decoded text to the X window currently in focus. The Morse code sound is played through the sound card.
Xdx is a client to connect to a DX-cluster for amateur radio. DX messages will be displayed in a list, and announcements will go to a text display. In addition to the usual functions, if you have hamlib installed it can control the radio and set the frequency simply by double clicking a DX-spot (using rigctl).