rrd-fixpeaks removes errant "peaks" in RRD data. It requires rrdtool.
rrd-merge merges RRD (round robin database) files together, including the files used by Ganglia, Cacti, and other rrdtool-based software.
Reduce the size of your Time Machine backups, save valuable disk space, and reduce the time it takes to back up your files.
A disk usage utility.