Mac OS X and Windows OpenGL 3D Engine tools, content and code to create games and applications. Newton physics, OpenAL sound with OGG Vorbis, Lua, Revolution, written in C.
SPE is a python IDE with auto indentation&completion,call tips,syntax coloring&highlighting,uml viewer,class explorer,source index,todo list,pycrust shell,file browsers,drag&drop,Blender support.Spe ships with wxGlade,PyChecker and Kiki.
...Blender is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback.
Available for Windows, Linux, Irix, Sun Solaris, FreeBSD, Mac OS X, and soon for the Sharp Zaurus.