Open source cad projects
Every project in the registry tagged cad, ranked by real GitHub adoption.
Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching, 293 guided cases. 55,000 priced positions, 44 languages, 195 modules. AGPL-3.0. pip i
Follow your curiosity. Build across disciplines. Open-source software and hardware for polymaths in the making.
Open-source, local-first 3D parametric CAD that runs in the browser for people and permissioned typed agents, powered by OpenCascade WASM.
Frequently asked questions
How many open source cad projects are there?
This registry tracks 3 projects tagged cad, with 1,875 GitHub stars between them. The most-adopted is OpenConstructionERP at 835 stars.
Are these cad projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which cad project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these cad projects still maintained?
3 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.