The Eclipse January project uses GitHub for source code and issue tracking. Head over to the Eclipse January repo on GitHub for the getting started.
GitHub Repositories
You can use the code from these repositories to experiment, test, build, create patches, issue pull requests, etc.
https://github.com/eclipse/january - Project repository hosted on GitHub.
https://github.com/eclipse/january-forms - Project repository hosted on GitHub.
https://github.com/eclipse/january-website - Project repository hosted on GitHub.