SilverStripe is hosted on github.com/silverstripe.
If you don't want to use git, you can get the latest SilverStripe codebase through daily builds.
Want to get involved in and discuss core development?
Join our Core Developers Discussion Google Group.
Interested in knowing what happens to the SilverStripe codebase as it evolves?
Subscribe to the SilverStripe changelog RSS feed.
Want announcements of new releases to the SilverStripe codebase and modules?
Join our Release Announcements Google Group.