macOS supports viewing USD, STL, Alembic, PLY, OBJ for almost a decade now (some formats being newer). Windows as well supports gltf in many areas. iOS native

macOS supports viewing USD, STL, Alembic, PLY, OBJ for almost a decade now (some formats being newer). Windows as well supports gltf in many areas. iOS natively supports USDZ for the last 5-ish years.