Open Source Software
From TSAS Library
Image Manipulation
- Use GIMP. If you've dreamt about Photoshop, give GIMP a try; you won't regret it.
3D Modeling
- Blender It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation. Here are some tutorials for learning modeling in Blender.
- Sculptris from the makers of ZBrush, but free!
Video Creation
- Shotcut
- (See Blender, above!)
Music Creation
- Audacity the one and only.
Game Development
- LibGDX desktop/Android/BlackBerry/iOS/HTML5 Java game development framework
- (See Blender, above!)