OS: Vista 64 (home premium)
Music: zune (yeah, shoot me :P), pandora a good while ago
Video: firefox, quicktime, wmp, vlc
Downloading: bittorrent, but I've not downloaded a linux distro in a long time
Browser: Firefox + mouse gestures
IRC: chatzilla
IM: gtalk
eMail: gmail, windows live mail client for pop3
Voice Chat: Ventrilo
Graphics:
Paint.net,
Inkscape
Desktop Customization:
Switcher
Office:
Lotus Symphony. Have not needed to do any document editing in a while.
AddOns updater: none
Editor: Notepad++ @home, visual studio and delphi (yay legacy apps) @work.
CD/DVD Burning:
ISO Recorder. Have not needed to use it in a while, though.
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Security': AVG, windows defender