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PartMode

open-source

Summary

PartMode is an open-source parametric CAD tool that allows human and agent modifications to share a single canonical document model and exact geometry. It is free to use under the GNU AGPL v3 license and operates as a browser-based application built on OpenCascade WebAssembly. It is intended for people and permissioned typed agents, and its architecture can be viewed as relating to other parameterized modeling tools. The project has a clear operational model involving local-first editing, with optional hosted agent connectivity.

What PartMode answers

What types of changes can the system manage?

human edits and changes from permissioned typed agents

Does the system require a local installation to run?

it operates as a browser-based application

What mathematical accuracy does the geometry maintain?

OpenCascade evaluates solid B-rep geometry

What state does the system use for collaboration?

a single canonical document model and exact kernel

Can agents edit an open project session?

browser-approved agents can edit the open project

What is the underlying computational engine?

built on OpenCascade WebAssembly

Release history

Nothing shipped since we started watching. Releases and docs updates land here as they happen.

watching since Aug 21, 2026

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