10 Greatest Open Source Software Of 2009

1: Inkscape ( Vector Graphics Editor )
2: 7-Zip ( Archiver )
3: VLC ( Media Player )
4: VirtualBox ( Virtualization )
5: Miro ( Internet TV )
6: TrueCrypt ( Disk Encryption )
7: Calibre ( eBook Converter and Reader )
8: GnuCash ( Financial Management )
9: GIMP ( Graphics / Simple Photo Editing )
10: Audacity ( Sound Editor / Recorder )

Source: http://www.cyberciti.biz/tips/10-greatest-open-source-software-of-2009.html