btrfs-sxbackup : Incremental btrfs snapshot backups with push/pull support via SSH ( https://github.com/masc3d/btrfs-sxbackup )
deja-dup : Déjà Dup is a simple backup tool (and frontend to duplicity). ( http://launchpad.net/deja-dup )
nautilus-dropbox : Store, Sync and Share Files Online ( http://www.getdropbox.com/ )
snapper-gui : Graphical user interface for the tool snapper for filesystem snapshot management ( https://github.com/ricardomv/snapper-gui )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a dev-zero
For Paludis use this rsync : rsync://gentoo.zugaina.org/dev-zero-portage
If you have a problem : ycarus(-at-)zugaina.org