Mercurial (2005) is a reasonably popular, reasonably distributed version control system (DVCS).
hg-snapshot is a Mercurial-fueled, NFS-, Samba-, and
SSHFS-enabled shell script for selectively recursive archival, distribution, synchronization, and syndication of /etc/ and /home/* files and paths across one or several local or remote machines — in DVCS-decentralized fashion. See: