Right now Siaqodb can be sync-ed with CouchDB and MongoDB via
SiaqodbCloud. Considering that Couchbase uses (quite) same protocol for Sync as CouchDB, it would be straight forward to add support for it. So if there will be enough demand we'll consider it; ofc, since SiaqodbCloud is open source, we'd accept any PR with new adapters/connectors for other NoSQL/SQLs engines :)