http://blogs.msdn.com/dragoman/archive/2009/01/27/web-sandbox-available-under-the-apache-license.aspxEarlier today we announced releasing the runtime code of the Web Sandbox available under the Open Source Apache License 2.0 . The announcement has already been picked up by the blogosphere . Should you head over to the site check out the Web Slices samplesen-USCommunityServer 2.1 SP1 (Build: 61025.2)