I've seen people use rebase like a patch queue a few times, and it always comes off as awkward and painful. This app seems to make that pattern of use a little less painful -- but patch queues are better. I wish more people knew about them as a source control tool.

mercurial queues - far and away the my favorite patch queue implementation - https://developer.mozilla.org/en-US/docs/Mozilla/Mercurial/Q...

stacked git - a solid git patch queue - http://procode.org/stgit/doc/tutorial.html