This blog post is dedicated to provide a list about the open source sites at Microsoft. Most of the following sites have rather extensive content in regards to open source and interoperability and I believe most of you will be surprised with them!

• http://www.microsoft.com/opensource News and resources about Microsoft and open source
• http://port25.technet.com/ Communication from the Open Source Community at Microsoft
• http://www.codeplex.com Open Source Project Hosting
• http://codeplex.org The newly announced CodePlex Foundation (nothing to do with the afore mentioned!)
• http://twitter.com/openatmicrosoft Twitter account for information on Microsoft and Open Source
• http://www.interoperabilitybridges.com/ Bridges between Microsoft and non-Microsoft technologies
• http://channel9.msdn.com/interoperability Interoperability topic area
• http://www.microsoft.com/interop Microsoft and Interoperability
• http://interopvendoralliance.com/labs/ The Interop Vendor Alliance is a community of software and hardware vendors working together to enhance interoperability with Microsoft systems on behalf of our mutual customers.
• http://blogs.msdn.com/interoperability Interoperability blog