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Couchbase Server vs ArcadeDB: catalog facts
Couchbase Server	ArcadeDB
Freemium A community edition is available; enterprise and hosted options are sold by Couchbase.	Free Free and open source under the Apache 2.0 licence.
macOS, Self-hosted	Self-hosted
JSON documents queried with SQL++ In-memory architecture with built-in search and vector services	Several data models in one ACID-compliant engine Supports SQL, Cypher, Gremlin, GraphQL and MongoDB queries
Aimed mainly at business deployments More complex to operate than a single-node database	A database server rather than a desktop client; needs setup and administration Embedding is limited to Java applications
Self-hosted	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	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.