This is an experimental version of Cool VL Viewer just released. Henri Beauchamp posted in the comments for the SL News 2013-2. I want to point out that Experimental Cool VL Viewer v220.127.116.11 has server-side baking support.
The feature is only available on the ADITI grid. But, using the viewer will test its ability to work with the legacy system on the main grid… well… legacy sounds a bit odd in this context. But, it soon is to be a legacy system… about February.
In the ADITI/Beta grid you can test it on both types of servers. See: Project Sunshine-Server Side Appearance.