F3D vs Jatayu 3D

F3D is free software for viewing 3D data, browsing models, and generating renderings. It supports lighting and materials for realistic rendering, animations with GPU-accelerated skinning for character rigs, and visualization tasks such as CAD, Gaussian splatting, volume rendering, and scientific work. Its supported formats include VTK, STL, DICOM, STEP, OBJ, glTF, FBX, USD, IFC, and Gaussian splat files, among many others. Packages are available for Windows, macOS, Linux, and Android, and a browser viewer can open or accept dropped files and provides rendering and display controls. Developers can use a Python package, a beta JavaScript/WebAssembly package, or the libf3d C++ library with Python and Java bindings. F3D is distributed under the BSD 3-Clause License. Some capabilities have specific limits: FBX PBR materials and Alembic materials are unsupported, while Gaussian splatting requires OpenGL 4.3, which macOS does not support. Documentation also says volume rendering and HDRI need a decent GPU. Plugins can vary by package.

Jatayu 3D is a browser-based 3D assembly viewer for engineers, managers, and suppliers. It runs on the web and Windows, with mobile also listed as supported. Formats include STEP, IGES, JT, STL, ESF, ECAD 3D STEP export, GLB, and OBJ. Viewer tools provide slicing, exploded views, part isolation, wireframe, transparency, and measurements for distance, angle, and wall thickness. Users can pin 3D annotations, comment, share session links, and export marked-up PDF review reports. Athivex says its WebGL renderer handles 100,000 or more parts at 60 FPS on a standard office laptop with Intel UHD graphics or better. The product includes an in-house native JT reader. The page describes session-verified DRM tokens and says geometry is not written to local disk or browser cache. The free Student plan allows files up to 50 MB and assemblies up to 10,000 parts. Professional is billed per seat; Ultra uses custom billing and lists unlimited file size and parts scale.