Open Source Solid Modeling CAD
Interactive 3D Layout Viewer for GDSII
Scanning Probe Microscopy Controller and Data Visualization Software
A 3d rendering framework
realtime 3d surface rendering library
Get as many FPS as you need and amazing effects by rendering HTML/CSS
PHIGS (Programmer's Hierarchical Interactive Graphics System)
Minimalist 3D Scenegraph Management Framework
3d printing software