FlightGear Flight Simulator: free open-source multiplatform flight sim
Draw vector graphics to scale using a descriptive language
2D & 3D TeX-Aware Vector Graphics Language
An interactive viewer for three-dimensional chemical structures.
A standalone, portable generic Ada package for decoding images
CIRT - CUDA Interactive Ray Tracer
itom - an Open Source Measurement, Automation and Evaluation Software
HARFANG 3D source code public repository
Rayshade raytracer
Web-based HTML5 Photo Viewer
Easy-OCR solution and Tesseract trainer for GNU/Linux
Tao3D is a programming language for real-time interactive 3D
Create and manage font lists for your projects
3D Charts - Templates for PovRay(TM)