a parametric 3D CAD modeler
3D fractal rendering software
Functy is a 3D graph drawing package that generates immediate results.
Multiplatform tool for batch image conversion
simple 3d scene viewer for windows/linux/android
Multiplatform GUI to losslessly compress JPEG files
Ultra-simple and fast zipped JPEG viewer released under GPL
Windows flexible and powerful screen grabber tool.
Crossplatform stack calculator with very fast usage.