Open Source Solid Modeling CAD
BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
Lamia or Lamia Engine is the modern generation free distributable and open source game engine for creating computer games for several prevailing software platforms and very maybe hardware platforms either.
Liam3 is a framework linking several external software to provide a MABS development environment for situated 3d agents and to display these agents in a real time 3d rendering engine. Initially it is linking MadKit and The Nebula Device.
It is an extension of Wish to Tcl/tk and includes a new widget called glview. Each glview widget can draw a 3D view and does OpenGL work in Tcl/Tk, a high-level language, if Tcl is Operating System independent then we can build OpenGL applications independent of the operating system.