Zmanda offers three versions of ZRM : the ZRM Enterprise edition, the ZRM Cluster edition and the ZRM Community edition. The Enterprise edition includes a graphical installer, Zmanda Management Console (ZMC), command-line interface and plugin framework. The Community edition is a freely downloadable subset of the Enterprise edition, licensed under the GNU GPLv2. It supports LVM snapshots but does not include the ZMC or the graphical installer. To know more in detail about the differences, you can visit our page here.