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Tweakcad alternatives & similar sites

TweakCAD — Parametric 3D CAD in your browser — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in 3 D Graphics →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
voice23d.com ↗	73 match 2 shared topics	ContainerCAD - Parametric 3D CAD Tool	en	3-d-graphics	robotsllmsaihumans	emailphone	none
3dboxdesigner.com ↗	73 match 2 shared topics	ContainerCAD - Parametric 3D CAD Tool	en	3-d-graphics	robotsllmsaihumans	emailphone	none
roughform.com ↗	70 match 2 shared topics	Roughform — Hard surface modeling, in your browser.	en	graphics-software	robotsllmsaihumans	emailphone	partial · 8
3dshapecraft.com ↗	70 match 2 shared topics	ShapeCraft - Free 3D Modeling in Your Browser	en	3-d-graphics	robotsllmsaihumans	emailphone	none
macro-parametrics.org ↗	68 match 2 shared topics	Macro-Parametrics	en	3-d-graphics	robotsllmsaihumans	emailphone	none
3dsynth.app ↗	68 match 2 shared topics	3dSynth: Parametric prints for curious makers	en	3-d-graphics Gumroad	robotsllmsaihumans	emailphone	none
3dsewer.com ↗	68 match 2 shared topics	3dSewer — Browser first 3D editor	en	graphics-software	robotsllmsaihumans	emailphone	none
rollercad.com ↗	66 match 2 shared topics	RollerCAD — Pattern in. Roller out. Ready to Print.	en	3-d-graphics	robotsllmsaihumans	emailphone	none
spline-for-design.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
spline-community.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
spline.app ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
spline3dmaker.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
spline3dmakers.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
splinecontent.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
splinedesign3d.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
splinefordesign.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
spline3ddesign.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none
splinemakers.com ↗	65 match 2 shared topics	Spline - 3D Design tool in the browser with real-time collaboration	en	graphics-software	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.