Mechanical Design GitHub Repositories (2026) · Open Source Tools

Package manager for things. Start designing modular hardware! PartCAD is the standard for documenting manufacturable physical products (a.k.a. Digital Thread or TDP). It comes with a set of tools to maintain product information and to facilitate efficient and effective workflows at all product lifecycle phases, boosted by AI.

git diff for CAD assemblies — two STEP files in, a picture of what changed plus a machine-readable change list out.