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Apache CouchDB

couchdb.apache.org

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Spec score 8.5 #6 of 28 in Document Databases

What it is

Apache CouchDB is a free document database that stores named documents and lets applications read and update them through a RESTful HTTP API. Documents can contain fields and binary attachments without following a fixed schema. Its query engine supports views made with JavaScript map functions and optional reduce functions. Incremental replication synchronizes databases in both directions between peers, including after disconnections; the project describes this as useful for offline-first applications across servers, phones, and browsers. PouchDB can replicate with CouchDB from mobile devices and web browsers. A cluster can present one logical database across multiple servers or virtual machines for added capacity and high availability. CouchDB uses an append-only file design, and its documentation describes document updates as ACID and all-or-nothing. Security features include administrator accounts, basic and cookie authentication, reader access controls, and JavaScript validation of document updates. Replicas may retain conflicting revisions for manual or automated resolution. CouchDB is self-hosted on servers or virtual machines, as a single node or cluster, and is licensed under Apache License 2.0.

Spec sheet

What it does
Apache CouchDB is a document database that stores named documents and provides a RESTful HTTP API for reading and updating them.Read 3 Oct 2026 · docs.couchdb.org
Platforms
The project lists downloads for Windows x64, macOS, Debian, Ubuntu, RHEL, and CentOS, as well as source releases.Read 3 Oct 2026 · couchdb.apache.org
Free plan
YesRead 22 Sep 2026 · couchdb.apache.org
Integrations
PouchDB is built for mobile devices and web browsers and can replicate data with CouchDB.Read 3 Oct 2026 · couchdb.apache.org
Security
CouchDB provides administrator accounts, basic and cookie authentication, reader access controls, and JavaScript document-update validation that can enforce custom security rules.Read 3 Oct 2026 · docs.couchdb.org
Support
The project offers a user mailing list described as a general discussion and support forum for CouchDB users.Read 3 Oct 2026 · couchdb.apache.org
License
The Apache CouchDB website identifies the software as licensed under the Apache License 2.0.Read 3 Oct 2026 · couchdb.apache.org
Founded
2008Read 28 Sep 2026 · couchdb.apache.org
Clustering
A CouchDB cluster can run one logical database server across multiple servers or virtual machines, with higher capacity and high availability.Read 3 Oct 2026 · couchdb.apache.org
Conflict handling
Replicas can retain conflicting document revisions, and CouchDB supports manual or automated conflict resolution.Read 3 Oct 2026 · docs.couchdb.org
Document model
Documents can contain fields and attachments, and CouchDB does not require a fixed schema.Read 3 Oct 2026 · docs.couchdb.org
Offline applications
The project describes replication between CouchDB server clusters, mobile phones, and web browsers as enabling offline-first applications.Read 3 Oct 2026 · couchdb.apache.org
Project founded
The Apache Software Foundation records the Apache CouchDB project as founded on 2008-11-19.Read 3 Oct 2026 · apache.org
Querying
CouchDB includes a query engine and supports views built with JavaScript map functions and optional reduce functions.Read 3 Oct 2026 · docs.couchdb.org
Reliability
CouchDB uses an append-only file design, and its documentation describes document updates as ACID and all-or-nothing.Read 3 Oct 2026 · docs.couchdb.org
Replication
CouchDB synchronizes databases incrementally and supports bidirectional replication between peers, including after periods of disconnection.Read 3 Oct 2026 · docs.couchdb.org

Plans and prices

Apache CouchDB Free Open-source database software · self-hosted on servers or VMs · single-node or cluster Read 3 Oct 2026 · couchdb.apache.org

Every Apache CouchDB plan and price →

Strong points and limits

Strong points

  • Documents need no fixed schema
  • Supports bidirectional incremental replication
  • Clusters span multiple servers or virtual machines
  • Apache License 2.0

Limits

  • Self-hosted deployment is required
  • Conflicting revisions may need resolution
  • No managed cloud platform is listed

Who it suits

CouchDB suits developers building applications around flexible JSON documents, especially where replication and offline-first behavior matter. It requires self-hosting on servers or virtual machines.

Verdict

CouchDB pairs a flexible document model with replication, clustering, and multiple access controls. Its self-hosted deployment model is central to the choice, so account for operating the database infrastructure yourself.

Where Specifiction places it

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