PHIGS (Programmer's Hierarchical Interactive Graphics System)
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor
realistic driving simulation + functions for 2D/3D graphics
Multiplatform GUI to losslessly compress JPEG files
jchart2d is a real-time charting library written in java.
very good CAD software
Fix STL files for 3D printing
Search and compare similar and identical photos.
Generate Harmonious Colors Freely.