• http://www.cadsoft.de/vdr/ - Linux. Freeware.
• http://www.mythtv.org/ - Linux. Freeware.
• http://www.showshifter.com - Windows. Shareware, 15 days trial. Price  from $60.
• http://www.8dim.com/ - TVedia. Windows. Shareware, 15 days trial. Price $60.
• http://www.dvbcore.com/ - MyTheater. Windows. Shareware, works 1 hour per start. Price $40.
• http://www.meedio.com/ - Windows. Shareware, 15 days trial. Price from $60.
• http://mediaportal.sourceforge.net/ - Windows. Freeware.
• http://www.xlobby.com/ - Windows. Freeware.
• http://www.gottvpvr.com/ - Windows. Freeware.
• http://www.fiftyseven.se/ (Swedish) - EPG delivery programs for the swedish market.
• http://www.linvdr.org/projects/linvdr/index.en.php - Linux distribution with VDR.
• http://vdr.bluox.org/download/index.php - Plugins for VDR.

HTPC Guides/News/Forums:

• http://www.htpcforums.com/
• http://htpcnews.com/
• http://www.linuxis.us/linux/media/howto/linux-htpc/
• http://wilsonet.com/mythtv/
• http://mysettopbox.tv/ - Build an STB with Linux and MythTV.
• http://remotew.free.fr/plugins.htm
• http://www.openhtpc.com/
• http://www.happysat.org/ - DVB information. Hardware info, applications, plugins, forum.
• http://dvbzone.dvhk.pl/?id=linuxss2 (Polish) - How to setup VDR with Skystar 2. Even the page is polish it might give you some hints by looking at the commands used.
• http://www.prisjakt.nu/forum/ (Swedish) - Swedish video&audio discussion forum. Good HTPC section.

Others:

• http://gunhal.asplund.nu
• http://www.lagfors.se
• http://money.asplund.nu