ModelIO - Victor-Haefner/polyvr GitHub Wiki
PolyVR provides many interfaces to import geometric models.
It is possible to use PolyVR as a data viewer, just use the main toolbar to open a 3D model file.
Well supported formats are VRML, COLLADA, GLTF, STEP, IFC and many more. See here for a more detailed list.
PolyVR does also handle pointclouds, preferably e57.