matplotlib: plotting with Python
A library that can help you with generating PDF documents
Graphical User Interface Toolkit for Python with minimal dependencies
An easy-to-use, modular, extendable and absurdly fast Julia package
OpenSCAD Graph Editor
Optical Simulation software
show and edit eulumdat files
3D slider puzzles for kids; helps teach solid geometry
C++ libraries and apps for computer graphics and data visualization
3D Charts - Templates for PovRay(TM)
Open Source Panorama Server for free virtual tour of 360 degrees views
LithoGraphX, 3D data analysis and visualization
Design and Display Happy Cube solutions
A collection of MATLAB tools for PIV, PTV, particle sizing, and more.
Simple calculator that can handle dates and time.
Application to creating charts.