In a blog post published on Jan 7, GitHub CEO Nat Friedman announced that GitHub private repositories are now free. Previously, free repositories had to be public, which made it difficult to use the free GitHub repos for unreleased code or applications that had sensitive information such as API keys.
Prior to this announcement, many people would use Bitbucket for the private repos and then move to GitHub for the public release. This is a hassle and collaborators often got confused.
GitHub Free private repos allow up to three collaborators.
If you want to collaborate on a project with us on GitHub, my id is codetricity and @jcasman is also jcasman on GitHub. We also have a GitHub organization for this community. https://github.com/theta360developers