On Monday, January 29th, 2018, as previously announced the old CodePlex.com site was retired and replaced with the CodePlex Archive. The archive contains all projects that were published on CodePlex when it went read-only in late 2017. To view the archive, go to https://codeplex.com. There, you can discover projects, view a summary of each project (including its work items and discussions), and download a complete archive of a project’s contents. The downloadable archive uses standard formats like JSON to make it easy to import a project’s data into other systems.
Thanks to everyone who contributed to open source projects on CodePlex and made the community great, and thanks also to all the people who worked so hard on the site over the years. It's always sad to see the end of one era but the future of open source is definitely a bright one and everyone who has worked on CodePlex is proud to have played a small part in helping some amazing projects get started.
So long - and thanks for all the fish.