Lightfeather is an open source 3D Engine for Mac, Windows and Linux geared
towards intermediate to professional programmers.
It has been in constant development since May 2005.

Notable features include:
* Support for GLSL and Cg shaders
* Support for HDR rendering
* Support for MRT (multiple render targets)
* Various culling methods: Portals, Octtrees, Occlusion culling, PVS
* Skeletal and Morphing Animation
* Exporter for Blender to lfm format
* Simple but powerful Post-Processing Framework
* Paging terrain with splatting
* Built-in GUI
* Some tools like Particlesystem-editor, terrain-editor, material-editor
* 20 tutorials with code to get new users up to speed quickly

It is distributed under the zlib/libpng license which allows you to use it for any purpose whatsoever including commercial projects without the need to redistribute your changes in any form or even mentioning that you use it (although that would be nice, of course).

Before you start using Lightfeather, we recommend reading the "How to build Lightfeather" , the "Engine Design" and the Renderpasses information in the documentation section.

If you want to help with Lightfeather's development, there are lots of possibilities to do so. You could, for example, submit patches, contribute models for the tests and example applications or write tutorials. If you want to work on the engine but don't know where to start look into the todo/request list.
Help in any form is always very welcome.