Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability.
It’s a technology I’ve been following and working with for the past couple months, especially around deploying it with puppet, I really have a feeling it is going to revolutionize the world of storage.

I just realized Ceph has a REST API since the Dumpling (0.67) release.
This API essentially wraps around the command line tools allowing you to monitor and manage your cluster.

Inktank, the company behind Ceph (a bit like Canonical is behind Ubuntu) recently released an enterprise offering that includes a web interface to manage your cluster and it is based on that API.
Calamari, their interface, is unfortunately closed source.

Open source initiatives are already being worked on (1, 2), can’t wait to see what kind of nice things we can craft !