F3D
F3D: A broad, free 3D viewer for CAD, scientific, medical, and point-cloud data. Ranked #19 of 29 in 3D Model Viewer Software by our editors (7.0/10); pricing: Free plan; best for technical and scientific 3D visualization users.
At a glance
- Editor score7.0 / 10
- PricingFree plan
- Best forTechnical and scientific 3D visualization users
- Free planYes
- Paid fromFree
- Facts checked22 Sep 2026
Where it wins
- Supports extensive CAD, scientific, medical, and 3D formats
- Includes volume rendering, scientific visualization, and Gaussian splatting
- Runs on Windows, macOS, Linux, Android, and web browsers
Where it doesn't
- Measurement and annotation features are not part of its verified feature set
- Presentation and sharing workflows are not part of its verified feature set
- Its broad technical scope may exceed basic model-viewing needs
Our verdict on F3D
F3D is a free, open-source 3D visualization application for viewing, inspecting, rendering, and exporting 3D data. It is aimed at technical and scientific users working with CAD models, polygonal assets, animations, volumetric datasets, medical data, scientific visualizations, point clouds, and Gaussian splatting scenes. Interactive scene viewing, camera controls, realistic lighting, material rendering, animation playback, scalar coloring, and color maps cover a wide range of visualization tasks.
Platform fit is a major strength. F3D provides desktop software for Windows, macOS, and Linux, Android packages, and a browser-based WebAssembly viewer. It also supports command-line rendering, PNG export, file-manager thumbnailer integration, and library-oriented usage through Python, JavaScript, and API options. The published format support spans CAD formats such as STEP, IGES, BREP, IFC, and DXF; common 3D formats including OBJ, glTF, GLB, FBX, COLLADA, USD, and 3MF; scientific and medical formats such as VTK, NetCDF, DICOM, NRRD, and TIFF; plus many point-cloud and splat formats. That breadth makes it suitable for mixed technical workflows across desktop, browser, and development environments.
F3D is strongest when the priority is broad file compatibility and visual inspection rather than project collaboration or formal review. Its rendering, animation, volume, scientific, point-cloud, and Gaussian splatting capabilities give specialists substantial depth in the viewer itself. However, verified measurement, annotation, presentation, and sharing features are not part of its stated offering, so teams needing those workflows should consider a more review-oriented alternative. Choose F3D for free, open-source technical visualization across multiple platforms; avoid it when structured markup, presentation delivery, or shared review is central.
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F3D pricing
F3D fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Supported platforms | Windows, macOS, Linux, Android, web browser |
| Supported file formats | VTK, VTK XML, VTKHDF, EXODUS II, NetCDF, PLY, STL, DICOM, NRRD, MetaImage, TIFF, PNG, JPEG, BMP, TGA, HDR, WebP, OpenEXR, QuakeMDL, CityGML, PTS, STEP, IGES, BREP, XBF, Alembic, OBJ, glTF, GLB, Draco, 3DS, VRML, FBX, COLLADA, OFF, DXF, DirectX, 3MF, USD, VDB, IFC, SPLAT, SPZ, LAS, LAZ, BPF, TerraScan BIN, CSD, PCD, PTX, QI, SBET, SLPK |
| Measurement tools | Not verified |
| Annotations or markup | Not verified |
| Presentation mode | Not verified |
| Sharing access | Not verified |
| Deployment | Desktop, Mobile |
| Platforms | Web, Windows, macOS, Linux, Android |
| Support | Docs, Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | f3d.app |
| Facts checked | 22 Sep 2026 |
Alternatives to F3D
- SketchfabA versatile web-based 3D publishing platform with embeddable viewing, APIs, VR, and app-free AR.9.2
- Autodesk NavisworksA Windows desktop workspace for reviewing coordinated construction models and reporting clashes.9.1
- Trimble ConnectAn affordable BIM collaboration hub with viewing, coordination, clash detection, and API access.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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