Open source brep projects
Every project in the registry tagged brep, ranked by real GitHub adoption.
SolidCraft: an open-source parametric 3D CAD application built in pure Rust. Desktop, web, and automation through MCP.
Parametric 3D CAD with a real B-rep kernel (OpenCASCADE)
Open-source, local-first 3D parametric CAD that runs in the browser for people and permissioned typed agents, powered by OpenCascade WASM.
Related tags
Frequently asked questions
How many open source brep projects are there?
This registry tracks 3 projects tagged brep, with 1,828 GitHub stars between them. The most-adopted is solidcraft at 672 stars.
Are these brep 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 brep 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 brep 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.