Operating system: Windows Vista Home Premium
Web browser: Mozilla Firefox
Office suite: Microsoft Office 2007
Calender: Google Calendar
Email: Gmail
RSS Reader: Google Reader
Music player: foobar2000
Video player: VLC
Podcatcher: Miro
Torrent downloader: µTorrent
IM: Pidgin
Voip: Skype & Telmex Softphone
Backup: Mozy Home
Time management: RescueTime
Personal finance manager: Buxfer
Programming IDE: Visual Studio 2008 Express (C/C++ and C#) & Eclipse Ganymede (Java, Python, Ruby)
Text editors: Notepad2 & Notepad++
Decompressor: 7-zip
Virtual CD mounter: Virtual CloneDrive
Antivirus: Avast
Desktop search: Google Desktop
Widget engines: Google Desktop & Vista Sidebar
Awesome tiny utilities: Katmouse, PenAttention, gAttach, HEXelon MAX, Launchy