Microsoft to shut down CodePlex — its website for hosting repositories of open-source software projects — on December 15, 2017. Microsoft VP: “At this point, GitHub is the de-facto place for open source sharing, and most open source projects have migrated there” Microsoft has teamed up with GitHub to create a “streamlined” migration tool to help developers shift their code and related content over to GitHub. Microsoft is itself using GitHub to host software projects such as PowerShell,.NET and its Chakra JavaScript engine.
Source: https://thehackernews.com/2017/04/codeplex-microsoft-github.html