Essential & Free

Here is a list of free software which I want to try this year :

• Ubuntu operating system
• AVG antivirus software
• Songbird music player and organizer
• Gimp & Paint.net drawing and photography
• CDBurnerXP cd &dvd burning
• Audacity audio Recording
• Avidemux video editing
• Virtualdub video capture
• 7-zip file compression
• Blender 3d modeling

Any other suggestions ?