Blender

Blender is a open source 3D content creation suite available for all major operating systems under the GNU General Public License and available for free. [1] Many developers for FlightGear use Blender, and there are a lot of articles on the FlightGear Wiki about using it.

Blender related articles:

• Blender Ground Signs Tutorial
• Howto:Add smooth ("ambient occlusion") shadows in Blender
• Howto:Add smooth shadows in Blender

Also related to modeling and Blender:

• Normals and Transparency Tutorial
• Howto: Illuminate faces
• Modeling - Getting Started
• Model Import and Export
• Normals and Transparency Tutorial
• Modeling - FAQ
• Modeling - SketchUp
• Howto: Make a helicopter
• SketchUp to AC3D exporter
• GMax2AC

Links

• http://www.blender.org/
• Get Blender