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

Apache CouchDB

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

  • 7K stars
  • Apache-2.0
  • Active this week
  • Last commit 2 days ago

Last verified Oct 20, 2026

Sync JSON documents across devices and servers with a self-hosted NoSQL database built for multi-primary replication and HTTP APIs.

Visit websiteGitHub7K stars1-click deploy on Hostinger
image of Apache CouchDB
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.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
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

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.

tech stack · detected from GitHub

What it's built on#

Languages
CC++ElixirErlangJavaJavaScriptPython
frequently asked

FAQ#

Is CouchDB a SQL database?

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

What is CouchDB best known for?

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

What license does Apache CouchDB use?

Apache CouchDB uses the Apache-2.0 license.

also worth a look

Similar open-source tools#

OrientDB

Alternative toAzure Cosmos DB

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

  • 4,995 GitHub stars
  • Apache-2.0Licence Apache-2.0

TiKV

Alternative toAmazon DynamoDB

Distributed key-value store with ACID transactions at scale

  • 16,918 GitHub stars
  • Apache-2.0Licence Apache-2.0

MongoDB

Alternative toAmazon DynamoDB

Popular open source NoSQL document database for modern apps

  • 28,651 GitHub stars

RethinkDB

Alternative toMongoDB Atlas

Open source distributed document database with real-time feeds

  • 26,994 GitHub stars
  • Apache-2.0Licence Apache-2.0

FerretDB

Alternative toMongoDB Atlas

Run MongoDB apps on PostgreSQL with no code changes needed

  • 11,089 GitHub stars
  • Apache-2.0Licence Apache-2.0

PouchDB

Alternative toGoogle Cloud Firestore

JavaScript database that syncs with CouchDB, works offline

  • 17,623 GitHub stars
  • Apache-2.0Licence Apache-2.0
by category

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Hostinger

Run Apache CouchDB on your own server

Hostinger sets Apache CouchDB up as a one-click app on a VPS.

Deploy on Hostinger

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