ConDep is a open source infrastructure configuration and deployment DSL (Domain Specific Language) specifically targeted to (but not limited to) the Windows Server platform. If your familiar with tools like Chef and Puppet, ConDep does very much the same, but with native support for Windows.
windows open-source ci provisioning config-mgmt net
A CI server made in .Net, mostly targeting Windows/.net platforms but can support other languages too. It was developed as a language fork of the original CruiseControl CI project developed by ThoughtWorks
windows open-source ci net