CADAM is the open source text-to-CAD web application
PyAMS (Python for Analog and Mixed Signals) CAD approach
very good CAD software
Free software for maps
LibrePLM integrates CAD editors in Odoo / LibrERP
A canvas library for generating technical drawings
The road cutting and filling quantity analyser and report producer app
Testsuite for libdwg
walterbot: Virtual presence device www controlled with a raspberrypy
A finite element data exchange system