Theses viewers are a part of my GitHub website:
Not really looking to compete with any other viewers out there, just posting it in case if anybody might find anything useful there.
There is also a Texture Viewer, which only shows the texture applied to a plane.
They are not necessarily perfect but functional and do allow local file loading (blobs) or URL loading either via local server or from the Internet.
Those who venture there to check it out should read the posted description.