Is Bitbucket or GitHub the host with the most?

Despite GitHub’s dominance, it is important to also remember Bitbucket.

Bitbucket (like GitHub) supports Git, but Bitbucket also supports the Mercurial revision control system, although neither currently supports Subversion directly.

The above factor will dictate which choice (out of Bitbucket and GitHub) many companies may make, although if they are Subversion shops it may still be a quandary.