Microsoft lo va vuelto a hacer.
GitHub ofrecerá repositorios privados ilimitados y gratuitos, cosa que hasta ahora era de pago.
Lo hará pudiendo tener hasta 3 colaboradores por repositorio, para trabajar en equipo.
New year, new GitHub: Announcing unlimited free private repos.
GitHub Free now includes unlimited private repositories.
For the first time, developers can use GitHub for their private projects with up to three collaborators per repository for free.Many developers want to use private repos to apply for a job, work on a side project, or try something out in private before releasing it publicly. Starting today, those scenarios, and many more, are possible on GitHub at no cost. Public repositories are still free (of course—no changes there) and include unlimited collaborators.
https://blog.github.com/2019-01-07-new-year-new-github/
Un buen punto por parte de Microsoft.
Personalmente hasta ahora, para repositorios privados usaba Bitbucket (que soporta hasta 5 colaboradores).