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.
To develop utility programs, routines, or tools to help build resources, scenarios, and game components for Auran's Jet gaming engine .
Geist3D is a graphics engine complete with an integrated development environment. It combines an extensible Scene Graph API with a Petri Net runtime kernel, the Lua scripting engine and rigid body physics.
Open source furniture designer that links to a proprietary manufacturing system.
XApphire will be an open source CAD/CAE application extensible (plugins) and scriptable (Python), developed in C++ and wxWidgets.