Yes, but there are a number of core differences<p>- Deepstream.io is a free open source server, not a PaaS offering<p>- Deepstream offers pub-sub, request-response and web-rtc call management in addition to data-sync<p>- Firebase’s data-sync approach is based on one large chunk of JSON data that allows you to observe and manipulate sub-paths. Deepstream does the same, but breaks the data down into individual units, called records<p>- Deepstream uses a functional permissioning model, allowing you to interface with other systems (data-bases &#x2F; active directory) for user-management, as opposed to firebase’ configuration based permissioning approach