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Apache CouchDB vs RethinkDB: catalog facts
Apache CouchDB	RethinkDB
Free Free and open source Apache project.	Free Free and open source under the Apache 2.0 licence.
Windows, macOS, Linux, Self-hosted	Windows, macOS, Linux, Self-hosted
Multi-primary replication between many nodes and devices Plain HTTP/JSON API	Changefeeds push live query updates to apps Built-in sharding and replication
Document model is not a fit for relational workloads Running a cluster takes server administration	Releases are infrequent ReQL query language takes time to learn
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: Apache-2.0	License: Apache-2.0
No account needed	No account needed
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.