OGRE is a game engine.
It uses the .mesh format. I make my models and export them via the OGRE plug-in which makes .mesh/.material files. I then can embed my worlds into web pages using
Blink3D.
Here are two of my (in progress) worlds:
http://www.ipa.net/~les/blink/world.html
http://www.ipa.net/~les/blink/2/world.html