Co-Founder here. containership is free and open source (https://github.com/containership/containership). You can run it in the cloud or on-prem behind your firewall. Our SaaS product, ContainerShip Cloud, allows users to launch clusters on providers with a few clicks, as well as backup the entire state of their cluster (including persistent data) for disaster recovery or to move between your Containership clusters with a click. Users still have direct access to docker.sock on their clusters, so everything is still under your control.