Use Autodesk Fusion 360 on Linux
FlightGear Flight Simulator: free open-source multiplatform flight sim
Free Live DVD distributive designed for astronomy amateurs.
Apodio - Gnu/linux Os for Artists & More
Fractal planet and terrain generator
Virtual paper folding program
The Utah Raster Toolkit 3.0, patchlevel 2
The HTML 5 JavaScript diagramming library
Open architecture GPU simulator and implementation
A Sync Tool Customised for Large Media Libraries
The software for solving special problems of mathematics and physics
OpenGL Planets, a solar system simulation.