a parametric 3D CAD modeler
The programmer's solid 3D CAD modeller
A free and open source multiplatform 3D parametric modeler
A math-inspired CAD program in haskell. CSG, bevels, and shells
Cross-platform Open-source 2D CAD
An interactive viewer for three-dimensional chemical structures.
Model Railway CAD program
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A Cross Platform and Open Source Electronics Design Automation Suite
Static and Dynamic Structural Analysis of 2D and 3D frames.
Free and open source pattern design software
An EnergyPlus shell for parametric studies and more ...
Draw vector graphics to scale using a descriptive language
Draw curves, colored 2D maps with CAD capabilities
Software for electromagnetic simulation
GDSread reads and converts Calma GDS stream files .
Software libraries for effective development of desktop applications.
A Model Rocket Motor Test Stand
2D CAD for precise drawing
Editor with scripting language, security features & system interfaces.