I am barely a novice designer. Normally I either download models from Internet repositories or hire somebody to make a model for me. I rotate it, zoom in/out, etc. inside my 3D app (in this case, SketchUp).
I have also experience setting up webservers, Apache specifically.
As you can see, I am missing a middle layer here. What software should I use in order to allow users to navigate or manipulate the object?
I cannot assume that the client web will have SketchUp or anything equivalent installed.