Yet another player in the PaaS battle field

Wolf Frameworks started the beta for his PaaS (Platform as a Service) offering.
Earlier this month Laird released an updated version of his Visual Map of Cloud Computing/SaaS/PaaS players where you can get an idea of the various companies trying to enter the PaaS market.
So if you still think that Force.com is your only option, you should have a look at that map that is now quite popular.