GLB2OBJ

This is a small application to convert glb to obj
extract the zip file anywhere. launch glb2obj.exe file, choose one or multiple files ,then an output folder and press "Convert Files".
to import objs into 3dsmax you should use my script "ImportObj" http://www.scriptspot.com/3ds-max/scripts/importobj ,It will import PBR materials and handle multiple parts objects.

Update 1.1: Added glTF support,a better texture file naming for PBR textures,and a new UI.
Also, it can now handle glTF or glb file containing multiple objects, it will name file with "_part_01","_part_02",etc... with coresponding texture sets.
If you use my script "ImportObj" it will import each parts, create their materials, then attach every parts to single objects, you can import multiple objects that have multiple parts they will be imported and attached based on their file name.

Update 1.2: Bug fix, glb or gltf files that doesn't have any texture weren't converted.