TMSU (http://tmsu.org/ http://tmsu.org/) and git-annex (https://git-annex.branchable.com/ https://git-annex.branchable.com/) also allow for different tag-based

TMSU (http://tmsu.org/ http://tmsu.org/) and git-annex (https://git-annex.branchable.com/ https://git-annex.branchable.com/) also allow for different tag-based filing methods. OS X has had native file tagging for at least a version or two now as well, though it's less helpful with many tags.