Programming

• Visual Studio Express 2010 (C#) – IDE for C#
• FlashDevelop – IDE for Flash

Textures

• Paint.Net – Image editor with many plugins.
• Explosion Texture Generator – Generate explosion textures.

Sounds

• Audacity – Sound editor
• SFXR – 8-Bit sound generator

3D Modeling

• Blender – 3D Modeling application, large learning curve.
• MeshMixer – 3D sculpting application, small learning curve, very simple capabilities.

Game Engine

Miscellaneous

• Tiled Map Editor – A general purpose tool for creating tiled maps.
• Chronolapse – A tool for creating a time-lapse view of your work.