Are there any alternative guest OSs that View supports other than Microsoft?
I have labs that just require Internet access and I if I give them a browser, they can accomplish all they need.
I would like to be able to apply filtering and restrictions to their sessions.
Moslty, the reason for this because M$ OS license leasing model ridiculous and more than I really need.
If what you are asking is a different hosted OS other than Windows the answer is no. If you are looking for a different OS on the endpoint there is a tech preview for a linux one out there. http://blogs.vmware.com/euc/2011/12/new-vmware-view-clients-for-the-holidays-mac-linux-ipad-and-andr...
If all your users need is a browser you don't need desktop virtualization to do that. You can use standard thin clients (in lots of OS variations) to provide a local browser and control restrictions, configuration, etc as part of the image or management tools for the thin client. You could even use RDS and publish a browser which would get you away from VDA licensing (RDS licensing). If you're set on a hosted desktop that's not windows consider alternative connection brokers like Leostream.