darktable is an open source photography workflow application
Make OpenStreetMap vector tiles without the stack
Node.js tool for optimizing SVG files
Flexible tool to build planet-scale vector tilesets
Composable transformations of Python+NumPy programs
Javascript Matrix and Vector library for High Performance WebGL apps
Model Railway CAD program
Another drawing editor for LaTeX with PSTricks & TikZ
A web interface to create custom vector-based visualizations
The swiss army knife of vector graphics scripting
JavaScript vector library
Experience the Reality !
Font editor
Create vector shapes for gimp easily
Not your usual Architectural Modeler
Inkscape extension to add and edit GNUplot graphs
Open Source CAD