<A href="http://www.infoworld.com/d/open-source-software/microsoft-azure-gets-open-source-rival-181845?source=rss_cloud_computing" target="_blank">Tier 3 is using EMC VMware's open source code as a cloud alternative</A> for Microsoft .Net applications. Tier 3 has open-sourced Iron Foundry, making it available from GitHub under the Apache 2 license.