.usd
USD sceneUniversal Scene Description
Pixar’s open scene framework, released as open source in 2016. A .usd file can be text or binary and can layer and reference other files to build very large scenes.
Film and animation pipelines, and big scenes shared between Houdini, Maya and Blender.
Opens in Blender, Houdini, Maya, usdview, NVIDIA Omniverse
About USD files