mr-drupal

Declaratively indicate which Drupal projects you want to use, run `mr update`, the end. No "check tarballs into git", no git submodules, no git-subtree. Great for smallish Drupal sites. Maintained by wimleers on GitHub, where it has earned 29 stars from the community.

It's actively developed around deployment, deployment-strategy, drupal, and is a solid reference for anyone building with these tools.