How to generate binary gltf array buffers? I'm looking for any way which enables me to quickly generate gltf files including the conversion of plain array buffers (vertex, index, color, etc.) into binary (bgltf, glb, bin) files.

I'm asking because it currently looks like there are only high level applications like Maya, Blender available which can do that or converters to indirectly write glTF from COLLADA.

Are there any way to generate binary gltf array buffers using low level / command line utilities?
Technically any file format where you can dump the entire file into a VBO and then render from that will work for the .bin files. Unfortunately those formats are less well known than they should be.

Then you only need to adjust the bufferview elements to reference the proper subset of the file