a parametric 3D CAD modeler
A CAD application for creating virtual LEGO models
A 2D CAD application for civil engineering , built with Free Pascal
very good CAD software
Model Railway CAD program
PyAMS (Python for Analog and Mixed Signals) CAD approach
Free and open source pattern design software
Free pcb editor
LibrePLM integrates CAD editors in Odoo / LibrERP
Solve Alignment of Road , Rail,Tunnel
Free software for maps
Free Invoice & Billing Software for Windows & Linux
GDSread reads and converts Calma GDS stream files .
Open Source Desktop GIS with Surveying and Cartography Functionality
Create and edit LDraw™ parts quick and easy.
The programmer's solid 3D CAD modeller
Cross-platform Open-source 2D CAD
CAD application for Technical Drawing exercises in Android
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
CAD Application entire developed in Python
Free CAD software
Helps with the Mach3 CNC Threading functionality
CAD application for Technical Drawing exercises