TweakCAD

Free plan Self-hostedWeb

What TweakCAD is

TweakCAD is a free, browser-based parametric 3D editor for designing models with sketches, extrudes, holes, patterns, and a parametric timeline. It works offline in a browser and can also run locally with Docker or Podman without a server dependency. The editor handles formats including STEP, STL, 3MF, BREP, FreeCAD .FCStd, DXF, SVG, and .cadjson. Its listed 3D exports are STEP, STL, and 3MF; DXF and SVG are available for 2D output. FreeCAD import is being introduced and currently covers sketches, pads, and pockets, with broader part coverage and round-trip support planned. The hosted service stores designs in the browser by default; optional cloud storage is available after signing in, and unpublished work stays private. A public AGPL-3.0 MCP bridge can let AI agents and external tools drive the editor. TweakCAD is open source under AGPL-3.0 and operated by HumanHub LLC. Documentation and video walkthroughs are still in progress, and the editor itself is suggested as a way to learn. The hosted service requires account holders to meet age 13 or the higher applicable local minimum; the local offline editor can be run at any age.

Who it suits

TweakCAD may suit people who want to create parametric 3D designs in a browser or run the editor locally. It is relevant to users who need common 3D and 2D formats or want to explore an open-source editor.

What it does well

Free and open source under AGPL-3.0
Browser editor works offline
Can run locally with Docker or Podman
Unpublished hosted designs stay private

What to know first

FreeCAD import currently covers only sketches, pads, and pockets
Broader FreeCAD coverage and round-trip are planned
Documentation and video walkthroughs are in progress
No published community projects currently

Plans

Plan	Billed and limits	Price
Editor	Free and open source under AGPL-3.0; run, fork, and self-host	Free
Commercial license	For embedding TweakCAD in a closed product or shipping it as part of a commercial offering	On request

As tweakcad.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

TweakCAD provides browser and local options for parametric design without a server dependency. FreeCAD import remains limited, and its documentation and video walkthroughs are still in progress.

Facts from TweakCAD's own pages

AI and tool integration: The public AGPL-3.0 MCP bridge can let AI agents and external tools drive the editor. · tweakcad.com, 11 Oct 2026
Challenges: The themed design contests have not started yet; the first challenge is being planned. · tweakcad.com, 11 Oct 2026
Cloud collaboration: Yes · tweakcad.com, 19 Sept 2026
Community models: The models page describes community designs users can study, fork, and build on, and currently says there are no published projects. · tweakcad.com, 11 Oct 2026
Components: The components page describes parametric building blocks such as fasteners, gears, and hinges, but currently says no components match the filter. · tweakcad.com, 11 Oct 2026
Data collection: The privacy policy says passwords are stored as salted hashes, third-party advertising trackers are not used, and personal data is not sold. · tweakcad.com, 11 Oct 2026
Editor features: The editor supports sketches, extrudes, holes, patterns, and a parametric timeline. · tweakcad.com, 11 Oct 2026
Exports: TweakCAD exports STEP, STL, and 3MF for 3D, plus DXF and SVG for 2D. · tweakcad.com, 11 Oct 2026
File import and export: STEP, STL, 3MF, BREP, FreeCAD .FCStd, DXF, SVG, .cadjson · tweakcad.com, 19 Sept 2026
FreeCAD import: FreeCAD import is rolling out and currently brings in sketches, pads, and pockets; broader part coverage and round-trip are on the roadmap. · tweakcad.com, 11 Oct 2026
Free plan: Yes · tweakcad.com, 19 Sept 2026
Intended users: The hosted service requires account holders to be at least 13 or the higher applicable local minimum; the local offline editor can be run at any age. · tweakcad.com, 11 Oct 2026
Learning and support: Documentation and video walkthroughs are described as in progress; the editor is suggested as the current way to learn. · tweakcad.com, 11 Oct 2026
Maker: The site identifies the operator as HumanHub LLC and states that TweakCAD is open source under AGPL-3.0. · tweakcad.com, 11 Oct 2026
Modeling method: parametric · tweakcad.com, 19 Sept 2026
Offline use: The browser editor works offline and can run locally in Docker or Podman without a server dependency. · tweakcad.com, 11 Oct 2026
Privacy: The hosted service says designs are stored in the browser by default, while cloud storage is optional after signing in; unpublished work stays private. · tweakcad.com, 11 Oct 2026
Product: TweakCAD is a parametric 3D design editor that runs in a browser. · tweakcad.com, 11 Oct 2026
Supported platforms: web browser; self-hosted locally with Docker or Podman · tweakcad.com, 19 Sept 2026

Where TweakCAD stands on Freedom251

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