http://3dviewer.net/
Digging through archived freebies, it can be very, very hard to identify what is in an obscurely named zip. Matching a zip to an anonymous thumbnail is even worse...
I don't mind unzipping files to a temporary directory. Then, problems begin...
Bad enough when there's a tiny, tiny thumbnail PNG with scant detail. Really old files lack even those, but there's a free 'RSR to PNG' utility on eg SCG that will search a directory tree...
What can you do when there's only an OBJ or 3DS mesh, perhaps with a MTL file ?
Though Wings is very powerful, it seems to lack a 'fit to screen' tool. Also, you cannot 'drag & drop' OBJ to the program, you must import such. This is very tedious...
I had a quickie 'OBJ viewer' utility from my P4 days; it won't work in Win 8+.
Google found a free on-line tool, URL above. Drag and drop your OBJ file onto their web-page like a Google image search, and up pops the mesh. You can rotate it, too...
Job done !!
ps: If you're desperate, you can do a screen capture with {shift} PrtSc, paste into eg IrfanView, crop and save. I still haven't figured how to make the Wings' equivalent work...