MEDUSA4 (now M4 DRAFTING)
MEDUSA4 (now M4 DRAFTING): A free personal edition brings drafting and 3D basics to Windows users. Ranked #37 of 80 in 3D CAD Software by our editors (5.7/10); pricing: Free plan; best for users needing free Windows drafting with 3D basics.
At a glance
- Editor score5.7 / 10
- PricingFree plan
- Best forUsers needing free Windows drafting with 3D basics
- Free planYes
- Founded1986 · Moers, Germany
- Facts checked16 Sep 2026

Where it wins
- Free personal and educational 2D/3D CAD edition
- Parametric design, sheet-metal tools, and 3D modeling
- DWG, DXF, STEP, IGES, STL, and PDF export support
Where it doesn't
- Commercial pricing is quote-based
- M4 PERSONAL is limited to personal and educational use
- Platform support is limited to Windows
Our verdict on MEDUSA4 (now M4 DRAFTING)
MEDUSA4, now marketed as M4 DRAFTING, is a 2D/3D CAD application from CAD Schroer for mechanical engineering and industrial design. It combines drafting with parametric design, basic and advanced 3D modeling, sheet-metal design, document management, standard parts, and CAD data interfaces. The product is suited to Windows users who need a broad drafting and design tool, while M4 PERSONAL provides a free option for personal and educational work.
The pricing structure separates non-commercial access from commercial deployment. M4 PERSONAL is free for personal and educational use, and commercial drawing conversion is available through eSERVICES. M4 DRAFTING is the commercial package, offered in Drafting, Premium, and Ultimate packages with quote-based pricing. This makes the free edition a practical entry point for learning and individual projects, while organizations need to discuss commercial requirements and pricing with CAD Schroer. Commercial users should also account for the published distinction between using the free edition and converting or publishing commercial drawings.
M4 DRAFTING covers more than core modeling, with P&ID design, macros and programming, document management, and interfaces for 3D CAD data. It integrates with Creo Parametric, SAP via ECTR, PTC Windchill PDMLink, Siemens Teamcenter, Dropbox, Google Drive, and Microsoft OneDrive. File support includes DWG and DXF editing and conversion, DGN import, STEP, IGES, VRML, VDA, STL, and PDF export. The main trade-off is platform scope: support is listed for Windows 10 and Windows 11. Choose it for Windows-based mechanical or industrial design with drafting, parametric, and sheet-metal needs; users requiring broader platform coverage or deeper verified 3D capability should consider alternatives.
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MEDUSA4 (now M4 DRAFTING) pricing
All 2 MEDUSA4 (now M4 DRAFTING) plans and prices →
MEDUSA4 (now M4 DRAFTING) fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Modeling method | Parametric |
| Assembly design | Not verified |
| Sheet-metal tools | Yes |
| Surface modeling | Not verified |
| Cloud collaboration | Not verified |
| Supported platforms | Windows 10, Windows 11 |
| File import and export | DWG, DXF, DGN (import only), STEP, IGES, VRML, VDA, STL; PDF export |
| Deployment | Desktop |
| Platforms | Windows |
| Integrations | 7 integrations: Creo Parametric, SAP via ECTR, PTC Windchill PDMLink, Siemens Teamcenter, Dropbox, Google Drive … |
| Pricing | Free plan (source) |
| Website | cad-schroer.com |
| Facts checked | 16 Sep 2026 |
MEDUSA4 (now M4 DRAFTING) integrations
MEDUSA4 (now M4 DRAFTING) lists 7 integrations on its own site.
- Creo Parametric
- SAP via ECTR
- PTC Windchill PDMLink
- Siemens Teamcenter
- Dropbox
- Google Drive
- Microsoft OneDrive
Alternatives to MEDUSA4 (now M4 DRAFTING)
- Siemens NXDeep hybrid CAD with Teamcenter integration for large engineering organizations.9.4
- CATIAA deep engineering suite for complex products, with enterprise pricing to match.9.3
- SOLIDWORKSFull mechanical CAD with broad design, manufacturing, simulation, and collaboration tools.9.2
See all MEDUSA4 (now M4 DRAFTING) alternatives →
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used MEDUSA4 (now M4 DRAFTING) for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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