The local Database for JavaScript Applications

Store data locally to build high performance realtime applications that sync data with the backend and even work when offline.

How others use it

Get Started For Free ➤

Realtime Applications made easy

In RxDB, everything is observable. Query Results, Documents, Document Fields, Events.

Whenever your data changes, your UI reflects the new state.
Realtime updates across components, browser tabs and user devices
All major frameworks Supported:

RxJS

Angular

React

Vue.js

Svelte

Writeawait collection.upsert({ id: 'foobar', color: '#e6008d' });

Observe with RxJS Observableawait collection.findOne('foobar') .$ // get observable .subscribe(d => { screen.backgroundColor = d.color; });

Sync with any Backend

RxDB's high-performance replication protocol powers real-time synchronization between clients and servers. While specialized plugins exist for GraphQL, CouchDB, P2P, Firestore, and NATS, it remains backend-agnostic — seamlessly integrating with any infrastructure over HTTP for unmatched flexibility and speed.

Online is Optional

RxDB adopts an offline-first approach, keeping your app fully functional even without a connection. Data is stored locally on the client and seamlessly replicated in the background, and you can even skip the backend entirely if you choose.

Keep your app running offline
Boost perceived performance
Simplify and speed up development
Reduces backend load and scales better

Runs in Any JavaScript Runtime

RxDB's modular storage architecture adapts to any JavaScript runtime — Browsers, React Native, Node.js, Electron, and beyond. Simply switch the storage plugin to reuse the same database and replication logic across all your apps, saving time and ensuring consistency.

Next.js

All the Features You'll Ever Need

Since its creation in 2018, RxDB has evolved into a powerhouse of features and plugins, offering an all-inclusive, future-proof solution for any type of application. Whatever you need now or might need down the road, is already built in. Giving you the confidence to create robust, scalable apps with ease.

Used by Thousands Worldwide

RxDB is a proven, battle-tested solution used by countless developers across the globe. With its flexibility, RxDB is used in a vast spectrum of apps and services — from real-time collaboration tools to mission-critical enterprise systems:

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

Nutrien, Canada

nutrien.com

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

Readwise, USA

readwise.io

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

SafeEx, Denmark

safeex.com

Start using RxDB today

The local Database for JavaScript Applications

Realtime Applications made easy

Sync with any Backend

Online is Optional

Runs in Any JavaScript Runtime

All the Features You'll Ever Need

Used by Thousands Worldwide

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

We use RxDB in our global offline-first app for technicians. Its robust features and total control ensure reliable performance, even with poor connectivity, resulting in a seamless maintenance solution.

We rely on RxDB to manage all our data in one place. Our custom store became unwieldy, so we switched to RxDB for schema migrations, real-time replication, conflict resolution, and reactive programming. Its push and pull handlers also integrate smoothly with our existing APIs.

We provide a mobile app that is used by people in the field to fill in valuable information like inspections, surveys and audits. Our users don't always have access to the internet, building from an Offline-first approach with RxDB allows us to have the data integrity we need without being online.

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

We use RxDB in our global offline-first app for technicians. Its robust features and total control ensure reliable performance, even with poor connectivity, resulting in a seamless maintenance solution.

We rely on RxDB to manage all our data in one place. Our custom store became unwieldy, so we switched to RxDB for schema migrations, real-time replication, conflict resolution, and reactive programming. Its push and pull handlers also integrate smoothly with our existing APIs.

We provide a mobile app that is used by people in the field to fill in valuable information like inspections, surveys and audits. Our users don't always have access to the internet, building from an Offline-first approach with RxDB allows us to have the data integrity we need without being online.

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

Start using RxDB today