Industries we serve

CAD viewers built for every engineering discipline

Marathon OS opens, inspects, and reviews CAD files for teams across automotive, aerospace, manufacturing, and beyond — directly in the browser, with no installs.

32+

Industries

50+

File formats

300MB

Per file

Pick your industry

Each industry page includes part libraries, supported file formats, and tailored review workflows.

32 industries

Don't see your industry?

Marathon OS supports any team working with 3D engineering files. Get in touch and we'll help configure the right viewer for your workflow.

Marathon-OS Design Hub

Everything you need to design faster, smarter, and with more impact.

Ink Slinger 1 | 3D CAD Engineering Model
Ink Slinger 1 | 3D CAD Engineering Model
3D Printed Metric Tap Index for M1.6 to M12 Sizes
3D Printed Metric Tap Index for M1.6 to M12 Sizes
Exercise Freecad 017 Chess Pieces The Tower 1 | 3D CAD Engineering Model
Exercise Freecad 017 Chess Pieces The Tower 1 | 3D CAD Engineering Model
Voronoi Pen Holder 3D Model - Geometric Desk Organizer
Voronoi Pen Holder 3D Model - Geometric Desk Organizer
3D Cnc Printer 1 | 3D CAD Engineering Model
3D Cnc Printer 1 | 3D CAD Engineering Model
2024 Design Mania | 3D Engineering Design File
2024 Design Mania | 3D Engineering Design File
Waveshare 7IN QLED Hinged Case
Waveshare 7IN QLED Hinged Case
Core X Y 3D Printer Jimy Edition
Core X Y 3D Printer Jimy Edition
Rubber Duckie | 3D CAD Engineering Model
Rubber Duckie | 3D CAD Engineering Model
20 Foot Shark | 3D CAD Engineering Model
20 Foot Shark | 3D CAD Engineering Model
Calibration Cube 5 | 3D CAD Engineering Model
Calibration Cube 5 | 3D CAD Engineering Model
3D Printable Sleeve for Vortec V900 Seatpost and Handlebar
3D Printable Sleeve for Vortec V900 Seatpost and Handlebar
Secret Box V2 | 3D Engineering Design File
Secret Box V2 | 3D Engineering Design File
1/4 Ff-B | 3D Engineering Design File
1/4 Ff-B | 3D Engineering Design File
Diy 360° Electric Rotating Turntable/ 3D Printing | High-Quality CAD Model
Diy 360° Electric Rotating Turntable/ 3D Printing | High-Quality CAD Model
Enclosure For T Display S3 Amoled Microcomputer 1 | 3D CAD Engineering Model
Enclosure For T Display S3 Amoled Microcomputer 1 | 3D CAD Engineering Model
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