Blender's Open Source Friends

Open Office: Open Source Office Programs

Similar to and compatable with Microsoft Word, Excel, and PowerPoint, and more..

Gimp: Open Source Image Manipulator

Similar to Photoshop

Voodoo: Open Source 3D Motion Tracking Software

Similar to Boujou

3D motion tracking tutorial

3D motion tracking: Example 1 Example 2 Example 3 Example 4 Example 5

Ubuntu: Open Source Operating System

Similar to Microsoft Windows and Mac OS

Ubuntu's User Interface: Example

Runs Blender, Gimp, and Open Office. Think about it. Ask yourself why you pay for things that are free. Then smile, because you can download all of this and try it out right now : )