There is pithos [1] from the Exoscale [2] and powers the production system. A new version of the open source project with API signature v4 and other updates is

There is pithos [1] from the Exoscale [2] and powers the production system. A new version of the open source project with API signature v4 and other updates is due out soon. [1] http://pithos.io/ http://pithos.io/ [2] https://www.exoscale.com/object-storage/ https://www.exoscale.com/object-storage/