I want to announce an open-source graphics engine here that I'm currently working on. It is called Horde3D. The first version of the SDK will soon be available for download but you can already have a look at the website and the documentation. Here is a short description:
Horde3D is a small open source 3D rendering engine. It is written in an effort to create a graphics engine that offers the stunning visual effects expected in next-generation games while at the same time being as lightweight and conceptionally clean as possible. Horde3D has a simple and intuitive interface accessible from virtually any programming language and is particularly suitable for rendering large crowds of animated characters in next-generation quality.

For more information see http://www.nextgen-engine.net
I hope you enjoy this ambitious project :)
Thanks for your interest
marciano














