3D Meeting without SW?

Hi,

I'm not sure if this topic would be better here or in "eDrawings",but here we go, anyway this is about data exchange:

Is there any free/low cost tools that works over internet likeSolidWorks 3D Meeting with these requirements:

* can show 3D-files that can be produced with SW
* allow markups
* does not need SW

optional
* allow measuringSolidworksImport export