# rxdb > A local-first realtime NoSQL Database for JavaScript applications - https://rxdb.info/ Latest version **17.5.0** (published 2026-08-20) · Apache-2.0 license · 0 weekly downloads ## Install ```sh npm install rxdb pnpm add rxdb yarn add rxdb bun add rxdb ``` ## Health **Score 80/100 (A)** — status: active. Positive: has types; esm support; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score; popular repo. Warnings: low downloads; large bundle. ## Facts | | | |---|---| | Version | 17.5.0 | | Published | 2026-08-20 | | First published | 2016-11-16 | | Weekly downloads | 0 | | License | Apache-2.0 | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Node | >=20 | | Dependencies | 23 | | Unpacked size | 10.9 MB | | Known vulnerabilities | 0 | | Install scripts | no | | Provenance | attested (GitHub Actions) | | GitHub stars | 23392 | | Author | pubkey | | Maintainers | pubkey | | Keywords | db, database, offline-first, local-first, local first, nosql, no-sql, jsonschema, schema, rxjs, pwa, progessive web app, hybrid app, localstorage, indexeddb, storage, react-native, encryption, encrypted, pouchdb, nats, websql, sqlite, query, live-query, realtime query, reactive, replication, realtime, realtime database, local database, embedded database, in-memory, memory, memory database, local database, embedded, embed, electron database, mongodb, lokijs, JSON, angular database, react database, capacitor database, node.js database, document, file database, json database, key value database, database driver, database abstraction layer, document database, graph database, mock database, cross-database, asyncstorage, localforage, mongoose, migrate database, websocket database, database-client, dbms, database engine, datastore, supabase, mongodb, appwrite, couchdb, firestore, firebase | ## Links - npm: https://www.npmjs.com/package/rxdb - Repository: https://github.com/pubkey/rxdb - Homepage: https://rxdb.info/ - Issues: https://github.com/pubkey/rxdb/issues - npm.io page: https://npm.io/package/rxdb ## Dependencies (23) - [ws](https://npm.io/package/ws.md) 8.21.3 - [ajv](https://npm.io/package/ajv.md) 8.20.0 - [dexie](https://npm.io/package/dexie.md) 4.4.2 - [mingo](https://npm.io/package/mingo.md) 7.2.4 - [graphql](https://npm.io/package/graphql.md) 17.0.2 - [as-typed](https://npm.io/package/as-typed.md) 1.3.2 - [z-schema](https://npm.io/package/z-schema.md) 12.4.1 - [@types/ws](https://npm.io/package/@types/ws.md) 8.18.1 - [crypto-js](https://npm.io/package/crypto-js.md) 4.2.0 - [js-base64](https://npm.io/package/js-base64.md) 3.9.2 - [graphql-ws](https://npm.io/package/graphql-ws.md) 6.2.1 - [ajv-formats](https://npm.io/package/ajv-formats.md) 3.0.1 - [simple-peer](https://npm.io/package/simple-peer.md) 9.11.1 - [oblivious-set](https://npm.io/package/oblivious-set.md) 2.0.0 - [@babel/runtime](https://npm.io/package/@babel/runtime.md) 7.29.7 - [event-reduce-js](https://npm.io/package/event-reduce-js.md) 6.0.0 - [is-my-json-valid](https://npm.io/package/is-my-json-valid.md) 2.20.6 - [broadcast-channel](https://npm.io/package/broadcast-channel.md) 7.4.0 - [custom-idle-queue](https://npm.io/package/custom-idle-queue.md) 5.0.2 - [@types/simple-peer](https://npm.io/package/@types/simple-peer.md) 9.11.9 - [jsonschema-key-compression](https://npm.io/package/jsonschema-key-compression.md) 1.7.0 - [array-push-at-sort-position](https://npm.io/package/array-push-at-sort-position.md) 5.0.0 - [get-graphql-from-jsonschema](https://npm.io/package/get-graphql-from-jsonschema.md) 8.1.0 ## Alternatives - [@mapbox/jsonlint-lines-primitives](https://npm.io/package/@mapbox/jsonlint-lines-primitives.md) — 5.3M weekly downloads - [reftools](https://npm.io/package/reftools.md) — 3.5M weekly downloads - [@hey-api/openapi-ts](https://npm.io/package/@hey-api/openapi-ts.md) — 3.5M weekly downloads - [@mapbox/geojson-rewind](https://npm.io/package/@mapbox/geojson-rewind.md) — 2.4M weekly downloads - [turbo-stream](https://npm.io/package/turbo-stream.md) — 1.7M weekly downloads ## Recent versions - 17.5.0 (latest) — 2026-08-20 - 17.0.0-beta.25 (next) — 2026-03-24 - 17.4.0 — 2026-07-13 - 17.3.0 — 2026-05-28 - 17.2.0 — 2026-05-04 - 17.1.0 — 2026-04-02 - 17.0.0 — 2026-03-30 - 17.0.0-beta.24 — 2026-03-24 - 17.0.0-beta.23 — 2026-03-20 - 17.0.0-beta.22 — 2026-03-20 - 17.0.0-beta.21 — 2026-03-19 - 17.0.0-beta.20 — 2026-03-18 - 17.0.0-beta.19 — 2026-03-18 - 17.0.0-beta.18 — 2026-03-15 - 17.0.0-beta.17 — 2026-03-11 - … 635 more at https://npm.io/package/rxdb/versions ## README

JavaScript Database

A fast, local-first, reactive Database for JavaScript Applications


       

     


  What is RxDB?

RxDB (short for Reactive Database) is a local-first, NoSQL-database for JavaScript Applications. Reactive means that you can not only query the current state, but subscribe to all state changes like the result of a query or even a single field of a document. This is great for UI-based realtime applications in a way that makes it easy to develop and also has great performance benefits.

Use the [quickstart](https://rxdb.info/quickstart.html), read the [documentation](https://rxdb.info/install.html) or explore the [example projects](https://github.com/pubkey/rxdb/tree/master/examples).

RxDB on Youtube

  Used by many

RxDB is a proven technology used by [thousands of developers](https://github.com/pubkey/rxdb/network/dependents) worldwide. With its flexibility, RxDB is used in a diverse range of apps and services.
(add yours)

  Multiplayer realtime applications

![realtime.gif](docs-src/static/files/animations/realtime.gif)

  Replicate with your existing infrastructure

RxDB provides an easy to implement, battle-tested Sync Engine for realtime replication with your existing infrastructure.
You do not have to use a specific cloud or backend database. The protocol works by implementing three simple HTTP endpoints. There are also production-ready plugins to easily replicate with GraphQL, CouchDB, Websocket, WebRTC (P2P), Supabase, Firestore, NATS or Google Drive.

  Flexible storage layer

RxDB is based on a [storage interface](https://rxdb.info/rx-storage.html) that enables you to swap out the underlying storage engine. This increases **code reuse** because the same database code can be used in different JavaScript environments by just switching out the storage settings. You can use RxDB on top of [LocalStorage](https://rxdb.info/rx-storage-localstorage.html), [IndexedDB](https://rxdb.info/rx-storage-indexeddb.html), [OPFS](https://rxdb.info/rx-storage-opfs.html), [LokiJS](https://rxdb.info/rx-storage-lokijs.html), [Dexie.js](https://rxdb.info/rx-storage-dexie.html), [in-memory](https://rxdb.info/rx-storage-memory.html), [SQLite](https://rxdb.info/rx-storage-sqlite.html), in a [WebWorker](https://rxdb.info/rx-storage-worker.html) thread and even on top of [FoundationDB](https://rxdb.info/rx-storage-foundationdb.html) and [DenoKV](https://rxdb.info/rx-storage-denokv.html). No matter what kind of runtime you have, as long as it runs JavaScript, it can run RxDB:

Browsers Node.js React Native Capacitor NativeScript Flutter or as an Electron Database

All the features that you need

Since its beginning in 2018, RxDB has gained a huge set of features and plugins which makes it a flexible full solution regardless of which type of application you are building. Every feature that you need now or might need in the future is already there.
Logging
Attachments
ORM
Conflict Handling
Middleware
Signals
TanStack DB 		State
Backup
Replication
Server
Storages
Local Documents 		Schema Validation
Compression
Migration
Encryption
CRDT
Population

  Quick start

#### Install ```sh npm install rxdb rxjs --save ``` #### Store data ```javascript import { createRxDatabase } from 'rxdb/plugins/core'; /** * For browsers, we use the localstorage based storage. * In other JavaScript runtimes, we can use different storages: * @link https://rxdb.info/rx-storage.html */ import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage'; // create a database const db = await createRxDatabase({ name: 'heroesdb', // the name of the database storage: getRxStorageLocalstorage() }); // add collections with a schema await db.addCollections({ heroes: { schema: { version: 0, primaryKey: 'name', type: 'object', properties: { name: { type: 'string', maxLength: 100 }, healthpoints: { type: 'number' } }, required: ['name', 'healthpoints'] } } }); // insert a document await db.heroes.insert({ name: 'Bob', healthpoints: 100 }); ``` #### Query data once ```javascript const aliveHeroes = await db.heroes.find({ selector: { healthpoints: { $gt: 0 } } }).exec(); // the exec() returns the result once ``` #### Observe a Query ```javascript await db.heroes.find({ selector: { healthpoints: { $gt: 0 } } }) .$ // the $ returns an observable that emits each time the result set of the query changes .subscribe(aliveHeroes => console.dir(aliveHeroes)); ```

  Get started

Get started now by [reading the docs](https://rxdb.info/quickstart.html) or exploring the [example-projects](./examples).

  Support and Contribute

- **Leave a Star ☝️** - [Check out how you can contribute to this project](https://rxdb.info/contribution.html). - [Read this when you have found a bug](./orga/bug-checklist.md) - [Buy access to the premium plugins](https://rxdb.info/premium/) - [Join us at discord to get help](https://rxdb.info/chat) - [Follow us at LinkedIn](https://www.linkedin.com/company/rxdb/) #### More content [Angular Database](https://rxdb.info/articles/angular-database.html), [Frontend Database](https://rxdb.info/articles/frontend-database.html), [localStorage](https://rxdb.info/articles/localstorage.html), [React Database](https://rxdb.info/articles/react-database.html), [Browser Database](https://rxdb.info/articles/browser-database.html), [React Native Database](https://rxdb.info/react-native-database.html), [PWA Database](https://rxdb.info/articles/progressive-web-app-database.html), [In-memory NoSQL database](https://rxdb.info/articles/in-memory-nosql-database.html), [JSON database](https://rxdb.info/articles/json-database.html), [Angular IndexedDB](https://rxdb.info/articles/angular-indexeddb.html), [React IndexedDB](https://rxdb.info/articles/react-indexeddb.html), [Optimistic UI](https://rxdb.info/articles/optimistic-ui.html), [local database](https://rxdb.info/articles/local-database.html), [React Native Encryption](https://rxdb.info/articles/react-native-encryption.html), [Vue Database](https://rxdb.info/articles/vue-database.html), [jQuery Database](https://rxdb.info/articles/jquery-database.html), [Vue IndexedDB](https://rxdb.info/articles/vue-indexeddb.html), [Firestore Alternative](https://rxdb.info/articles/firestore-alternative.html), [Firebase Realtime Database Alternative](https://rxdb.info/articles/firebase-realtime-database-alternative.html), [Ionic Storage](https://rxdb.info/articles/ionic-storage.html), [Electron SQLite](https://rxdb.info/articles/electron-sqlite.html), [TanStack DB Offline](https://rxdb.info/articles/tanstack-db/tanstack-db-offline-first.html) ---------------- View [llms.txt](https://rxdb.info/llms.txt) --- _Source: https://npm.io/package/rxdb · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._