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.

Fidget Keychain | 3D Engineering Design File
Fidget Keychain | 3D Engineering Design File
Cover Usb & Btt Tf Cloud Artillery | 3D Engineering Design File
Cover Usb & Btt Tf Cloud Artillery | 3D Engineering Design File
Dino Nuggies V6 1 | Professional CAD Design
Dino Nuggies V6 1 | Professional CAD Design
Nextruder Heater Block CAD Model
Nextruder Heater Block CAD Model
Kingroon KP3S Pro Board and TFT Screen Mounting Mod
Kingroon KP3S Pro Board and TFT Screen Mounting Mod
Piggy Bank Vending Machine with Coin Recognition and Candy Dispenser
Piggy Bank Vending Machine with Coin Recognition and Candy Dispenser
Snowflake | 3D Engineering Design File
Snowflake | 3D Engineering Design File
Chess All Pieces 1 | 3D CAD Engineering Model
Chess All Pieces 1 | 3D CAD Engineering Model
Plastic Ant Vertical Spinner 1 | 3D CAD Engineering Model
Plastic Ant Vertical Spinner 1 | 3D CAD Engineering Model
3D Printed Protective Case for Environmental Sensor
3D Printed Protective Case for Environmental Sensor
Build Plate Scraper 1 | 3D CAD Engineering Model
Build Plate Scraper 1 | 3D CAD Engineering Model
3D Model of Bambulab A1 Hotend for Engineering Use
3D Model of Bambulab A1 Hotend for Engineering Use
Test_001 | 3D Engineering Design File
Test_001 | 3D Engineering Design File
Compact 3D Printer Hotend Design
Compact 3D Printer Hotend Design
Mug Coffee No 122 1 | 3D CAD Engineering Model
Mug Coffee No 122 1 | 3D CAD Engineering Model
Personal Project Invisible Microphone Bracket For The Insta360 One Rs | 3D CAD Engineering Model
Personal Project Invisible Microphone Bracket For The Insta360 One Rs | 3D CAD Engineering Model
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