Below please find (and hopefully make use of) a list of open source applications. I hope to provide heads up on some good free software from time to time.
Video Player- VLC
http://www.videolan.org/vlc/This is a whole world better than media player. There is even a MAC version !
Instant Messaging- Pidgin
http://pidgin.im/Have all your various IM programs available together
DVD-ripper/ Video converter- Media Coder
http://mediacoder.sourceforge.net/download.htmHandy and powerful tool for DVD coversion
MS Office Replacement- Open Office
http://www.openoffice.org/I've used this at work years ago. Very solid and free !
FTP- Filezilla
http://sourceforge.net/project/showfiles.php?group_id=21558I use this frequently, it's solid
Creepy Screensaver- Electric Sheep
http://www.electricsheep.org/index.cgi?&menu=downloadI know screensavers aren't needed anymore, but enjoy
Preperation for the Future- Zombies!
http://codenautics.com/zombies/Fight 3D zombies for both windows and Mac
Anti-virus *SCANNER*- ClamWin
http://www.clamwin.com/Free virus scanner, not a magic bullet, needs to be run frequently
CD/DVD/Blueray burner- ImgBurn
http://www.imgburn.com/Fast burning of optical image files that can be burned to disk
CD/DVD Backup- Disc Master
http://www.download.com/Disc-Master/3000-2646_4-10340514.html?tag=lst-0-5Make backup CD/DVDs
Hope that helps.. I'll get some time soon to post more