.usda
USDA sceneUniversal Scene Description ASCII
The human-readable text encoding of Universal Scene Description. Prims, attributes and references appear as plain text, which makes the scene easy to review and track in version control.
Inspecting, hand-editing and diffing USD scenes.
Opens in Blender, usdview, Houdini, any text editor
About USDA files.gltf
glTF modelGL Transmission Format
An open 3D format from the Khronos Group, first released in 2015. A JSON file describes the scene and points to separate binary buffers and texture images.
Exchanging real-time 3D scenes with materials and animation between tools and engines.
Opens in Blender, three.js, Godot, Unity and Unreal (with plug-ins)
About GLTF files