Support for .NET has been added to the ActiveState Stackato cloud platform in both its free and commercial versions.
Stackato is a platform as a service (PaaS) that began with support for Perl and Python, and over time has added support for Java, Ruby, PHP, Node.js, Clojure, Scala and Erlang and now .NET.
Stackato is based on VMware's open source Cloud Foundry project, with extensions including an improved security model and management consoles. You can use the service to install and manage applications in private clouds such as VMware's vSphere, or in public clouds from Amazon or Rackspace.
Stackato comes in a free version called Stackato Micro Cloud that can be used locally on one virtual machine. For ‘real’ apps, there’s a commercial version called Stackato Enterprise that can be run on clusters and deployed to public cloud providers. The price of this version is available on request.