Link branch FreeCAD
A math-inspired CAD program in haskell. CSG, bevels, and shells
A CAD application for creating virtual LEGO models
Cross-platform Open-source 2D CAD
Virtual Satellite
a parametric 3D CAD modeler
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 ...
Open source Matlab code for nonlinear isogeometric analysis
Software for electromagnetic simulation
2D CAD software
FEATool Multiphysics is an easy to use FEA and CFD Simulation Toolbox
very good CAD software
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
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
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java