F3D is a fast and minimalist 3D viewer created by Michael Migliore and Mathieu Westphal. It offers support for various file formats, including glTF, STL, STEP, PLY, OBJ, FBX, and Alembic. Not only can it display animations, but it also provides options for rendering and texturing, such as real-time physically based rendering and raytracing. F3D is fully controllable from the command line and offers features like thumbnails, interactive hotkeys, drag and drop, and integration into file managers. Additionally, it includes the libf3d library, which allows for rendering meshes. F3D is a community-driven project that relies on other open-source projects such as VTK, OCCT, Assimp, Alembic, Draco, and OSPRay. It is available under the 3-Clause BSD License.
https://f3d.app//