Link branch FreeCAD
A CAD application for creating virtual LEGO models
A math-inspired CAD program in haskell. CSG, bevels, and shells
Cross-platform Open-source 2D CAD
a parametric 3D CAD modeler
Virtual Satellite
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A Cross Platform and Open Source Electronics Design Automation Suite
Free and open source pattern design software
An EnergyPlus shell for parametric studies and more ...
FEATool Multiphysics is an easy to use FEA and CFD Simulation Toolbox
Static and Dynamic Structural Analysis of 2D and 3D frames.
Open source Matlab code for nonlinear isogeometric analysis
very good CAD software
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
Software for electromagnetic simulation
Beginner-friendly CAD software available for both web and desktop.
CAD
GDSread reads and converts Calma GDS stream files .
Solve Alignment of Road , Rail,Tunnel
2D CAD software