Here's one from Google, and because it's from the big G I'd say it might have a future. In theory.

 

https://code.google.com/p/jsc3d/

More interesting options here:

 

http://www.html5code.com/gallery/javascript-3d-model-viewer/

 and there are many more.

 

the trick is to find something that will do what you need and that will easily play on mobile platforms too, and stay around for years to come.