VRML is the Virtual Reality Modeling Language, a standard method to display 3D interactive worlds and objects on the web. The most common way to display, show, browse, play, or view VRML files, models, or worlds (.wrl file extension) is with a free VRML plugin, also known as a browser, player, viewer, reader... One of them is Cortona plug-in, which is freeware.
Cortona VRML Client works as a VRML plug-in for popular Internet browsers (Internet Explorer, Netscape Navigator, Mozilla, etc.) and office applications. For the Firefox 3.0.4.+ users it is advised to download Cortona v6 plug-in because of the Firefox's compatibility problem with previous version of Cortona plug-in.
Some VRML plugins for Linux and Mac OS X are listed here and on the VRML Plugin Detector.
After installing Cortona plug-in please click here to see the VRML model of sis for coffee roasting.