Calamari is a management platform for Ceph, an attractive dashboard to monitor and manage your Ceph cluster. It was initially developed by Inktank as proprietary software that shipped with Inktank's Ceph Enterprise product. After Inktank was acquired by Red Hat, Calamari was open sourced and has received additional development. The Calamari back end leverages Python, SaltStack, ZeroRPC, Graphite, Django, and gevent. The Calamari backend has been open sourced with the LGPL2+ license; you can find the repository and ample information at https://github.com/ceph/calamari.
Excellent Calamari documentation is available at http://calamari.readthedocs.org.