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PLY File Viewer – Instantly Open & Explore PLY Files

Effortlessly view and inspect PLY (.step, .stp, .stl, .ply, .off, .igs, .iges, .brp, .brep) files online. Marathon OS CAD Viewer delivers fast, secure, and high-performance rendering with no downloads needed.

Drag & drop your 3D files here

Supported formats:

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Don’t have a file? Try one of these samples:
Organization FeaturesFile stay private
Organization FeaturesAutomatically deleted after 24hrs
Organization Featuresadd upto 300MB

Empowering Industries Across the Product Lifecycle

From automotive to aerospace, Marathon OS helps engineering and manufacturing teams collaborate faster, manage complex designs, and drive innovation — all in one place.

Aerospace & Aviation
Aerospace & Aviation

Aerospace requires ultra-precise engineering with strict compliance standards. Marathon OS offers secure design sharing, multi-team access, and lifecycle traceability for every part.

Video Games & Virtual Reality
Video Games & Virtual Reality

Game and VR developers work with 3D assets and environments. Marathon OS enables cross-team collaboration on models, textures, and design feedback — online.

Jewelry & Watchmaking
Jewelry & Watchmaking

This industry demands precision in micro-scale designs. Marathon OS makes it easy to preview, iterate, and organize detailed CAD files for intricate creations.

Manufacturing & CNC
Manufacturing & CNC

Manufacturing relies on precision and process integration, especially with CNC machining. Marathon OS centralizes design files, toolpaths, and revision data in one place.

Robotics & Automation
Robotics & Automation

Robotics blends mechanics, electronics, and software — requiring synchronized development. Marathon OS enables shared CAD views, modular design tracking, and change management.

Architecture & Construction
Architecture & Construction

Architectural and construction firms deal with large blueprints and 3D models. Marathon OS enables online access, commenting, and streamlined sharing of all formats.

Marine & Shipbuilding
Marine & Shipbuilding

Marine engineering involves massive structural components and multi-disciplinary designs. Marathon OS ensures every stakeholder accesses the latest CAD and documentation versions.

Automotive Industry
Automotive Industry

The automotive sector designs complex mechanical systems, from engines to interiors. Marathon OS streamlines part management, CAD collaboration, and version control across engineering teams.

3D Printing & Prototyping
3D Printing & Prototyping

Rapid prototyping demands quick file access and iteration. Marathon OS supports file conversion, model previews, and team collaboration for 3D printing workflows.

PCB & Electrical Engineering
PCB & Electrical Engineering

Electrical engineers manage PCBs, schematics, and layouts with high detail. Marathon OS keeps design files versioned, accessible, and linked to your product lifecycle.

Scientific Research & Simulation
Scientific Research & Simulation

Research projects use simulation models, test data, and analysis files. Marathon OS helps store, view, and collaborate on these assets while preserving data integrity.

Medical & Healthcare
Medical & Healthcare

From surgical instruments to wearables, medical devices need compliant design systems. Marathon OS helps manage revisions, approvals, and secure file sharing with teams.

Why Choose Marathon OS CAD Viewer?

Marathon OS CAD Viewer renders any CAD file instantly with a proprietary engine, ensuring seamless, lag-free visualization—no matter the model size.

Organization Features
Lightning-Fast Rendering

Marathon OS optimizes real-time CAD visualization with smooth performance, even for large and intricate models.

Organization Features
Supports Multiple Formats

View STEP, IGES, STL, BREP, and more with precision and clarity—right in your browser.

Organization Features
No Installation Required

Skip heavy software—just upload and start viewing instantly.

Organization Features
Cloud-Based & Secure

Files stay private and automatically delete after 24 hours for security.

Organization Features
Engineered for Professionals

Designed for engineers, manufacturers, and designers needing quick, high-quality CAD previews.

Essential Features of Marathon OS CAD Viewer

Effortlessly upload and view CAD files with a high-speed, secure, and scalable tool. Experience smooth, real-time rendering—no software installation required.

Seamless CAD File Import

Upload STEP, IGES, STL, BREP, and more for instant visualization without delays.

Handles Large & Complex Models

Powered by a proprietary rendering engine, ensuring zero lag even for intricate designs.

No Installation Required

View 3D models directly in your browser—no downloads or plugins needed.

Secure & Privacy-Focused

Your files are encrypted, private, and automatically deleted after 24 hours for security.

FAQ

Find answers to common questions about Marathon OS CAD Viewer. Whether you're getting started or looking for advanced features, we've got you covered.

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What is Marathon OS CAD Viewer?
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What file formats are supported?
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Is Marathon OS CAD Viewer free to use?
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How is my data stored and secured?
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Do I need any special software or training?
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Can I view large and complex CAD models?