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Home/Categories/Databases & Storage/Apache CouchDB
icon of Apache CouchDB

Apache CouchDB

Open source alternative to MongoDB Atlas, Amazon DynamoDB and Azure Cosmos DB

A NoSQL database featuring seamless multi-primary sync, scaling from Big Data to Mobile with an HTTP/JSON API.

6.9K stars

Repository

Stars
6.9K
Forks
1.1K
License
Apache-2.0
Last commit
19 days ago
Last verified
May 13, 2026
Repo
apache/couchdb ↗

Additional details

Erlang
Apache-2.0
Active this month
Visit websiteGitHub repo
image of Apache CouchDB
Contents
  1. 01Who Apache CouchDB is for
  2. 02The problem it solves
  3. 03How it solves it
  4. 04Strengths and trade-offs
  5. 05Apache CouchDB vs alternatives
  6. 06Tech stack
  7. 07FAQ
  8. 08Similar open-source tools
TL;DR

Apache CouchDB is an Apache-2.0 document database for teams that need HTTP/JSON storage, replication, and offline-friendly sync. It stores JSON documents, exposes a REST-style API, and is known for multi-primary replication across servers and occasionally connected clients. Best for apps where data needs to sync reliably across devices, edge nodes, or distributed offices.Apache-2.0 · Erlang · 6.9K stars · Active this month

who it's for

Who Apache CouchDB is for#

Offline-capable field applications

CouchDB fits apps where users collect or edit data without reliable connectivity and sync later.

Skip if:

Use PostgreSQL or MySQL if you need relational joins, strict transactions, and SQL reporting as the primary workflow.

Distributed teams syncing local data stores

Teams can replicate JSON documents across nodes, offices, or devices to keep data available near users.

Skip if:

Skip it if all users are online and a single managed database would be simpler.

the problem
tech stack · detected from GitHub

What it's built on#

Languages
CC++ElixirErlangJavaJavaScriptPython
frequently asked

FAQ#

Is CouchDB a SQL database?
What is CouchDB best known for?
What license does Apache CouchDB use?
also worth a look

Similar open-source tools#

OrientDB

OrientDB

Multi-model NoSQL database: graphs, docs, and key-value

5KJavaApache-2.0
Language
Erlang
Open issues
369
Contributors
258
First release
2009

Categories

Databases & StorageBackend DevelopmentAPIs & Integration

Tags

DatabaseAPI InfrastructureFile Sync & StorageSelf HostedDeveloper ToolsCloud Native

The problem it solves#

Centralized databases are awkward for apps that need to work offline or across unreliable networks. If every write must reach one primary database immediately, mobile users, field teams, and distributed offices end up with broken workflows or custom sync code.

Document replication solves part of that problem, but it changes the data model. Teams need to design for conflicts, eventual consistency, and document-based access patterns.

how Apache CouchDB solves it

How it solves it#

JSON document storage

CouchDB stores data as JSON documents and exposes access through HTTP APIs, which makes it approachable for web and mobile applications.

Multi-primary replication

CouchDB is known for replication between databases, supporting distributed and offline-friendly data workflows.

Apache project licensing

The project is part of the Apache ecosystem and the repository reports Apache-2.0 licensing.

Offline-first architecture fit

CouchDB pairs well with sync-oriented applications where local data needs to reconcile with remote databases over time.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Replication is central, not bolted onCouchDB is strongest when sync and replication are core requirements rather than afterthoughts added to a centralized database.
  • Web-native API modelHTTP and JSON access fits browser, mobile, and service integrations without requiring every client to speak a database-specific wire protocol.
  • Strong fit for distributed systemsCouchDB can support edge, field, and multi-site workflows where connectivity cannot be assumed.

Trade-offs

  • -Eventual consistency affects designCouchDB replication requires teams to handle conflicts and data convergence. Apps expecting strict relational transactions may struggle.
  • -Not a drop-in SQL replacementCouchDB's document model and query approach differ from relational databases. Reporting-heavy workloads may still need SQL databases or downstream analytics.
versus alternatives

Apache CouchDB vs alternatives#

Apache CouchDB vs MongoDB

CouchDB and MongoDB are both document databases, but CouchDB is especially focused on HTTP/JSON access and replication. MongoDB is broader as a general-purpose document database with a large managed cloud ecosystem.

CouchDB is the better fit when offline-first sync and multi-primary replication are central requirements. MongoDB is still the better fit when a team wants a mainstream managed document database, broad tooling, and richer general-purpose query options.

Apache CouchDB uses the Apache-2.0 license.

TiKV

TiKV

Distributed key-value store with ACID transactions at scale

16.7KRustApache-2.0
MongoDB

MongoDB

Popular open source NoSQL document database for modern apps

28.3KC++
ArangoDB

ArangoDB

Multi-model database: documents, graphs, and key-value in one

14.2KC++
RethinkDB

RethinkDB

Open source distributed document database with real-time feeds

27KC++Apache-2.0
FerretDB

FerretDB

Run MongoDB apps on PostgreSQL with no code changes needed

11KGoApache-2.0

No. CouchDB is a JSON document database with an HTTP API, not a relational SQL database.

CouchDB is best known for replication and offline-friendly distributed data workflows.