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RethinkDB vs Couchbase Server: catalog facts
RethinkDB	Couchbase Server
Free Free and open source under the Apache 2.0 licence.	Freemium A community edition is available; enterprise and hosted options are sold by Couchbase.
Windows, macOS, Linux, Self-hosted	macOS, Self-hosted
Changefeeds push live query updates to apps Built-in sharding and replication	JSON documents queried with SQL++ In-memory architecture with built-in search and vector services
Releases are infrequent ReQL query language takes time to learn	Aimed mainly at business deployments More complex to operate than a single-node database
Downloadable app, Self-hosted	Self-hosted
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.