Zapping - Zapping is a TV viewer for the Gnome desktop. It runs on Linux, FreeBSD and Solaris.
PseudoTV - PseudoTV Live is channel-surfing for your media center.
Enna - Enna is a Media Center application.
Winclip - DVB S/T/C Application
Tvheadend - Redmine
DVBStreamer - DVBStreamer is an console based application to stream DVB/ATSC service(s) over UDP or to a file.