Powersync-Js

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powersync-js is a Coding & Development tool that enables local-first, real-time reactive apps with embedded SQLite for JavaScript clients. It synchronizes data between client-side SQLite and various server-side databases.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is powersync-js?

powersync-js is an SDK designed for building local-first and real-time reactive applications, leveraging embedded SQLite for JavaScript clients, including React Native and Web. It acts as a sync engine, facilitating seamless data synchronization between client-side SQLite databases and server-side databases such as Postgres, MongoDB, MySQL, or SQL Server. This enables developers to create apps with instantly-responsive user interfaces and simplified state transfer. The monorepo includes SDKs for React Native, Web, and Node.js, along with integrations for popular frameworks like React, Vue, and ORMs like Kysely and Drizzle. It also provides demo applications for various backend and client-side frameworks, showcasing its versatility.

Best used for

Ideal for developers who need to build highly responsive, local-first applications with real-time data synchronization across various databases. Especially valuable for creating mobile and web apps that require offline capabilities, simplified state management, and seamless integration with frameworks like React and Vue.

Common actions

build local-first apps

enable real-time sync

manage client-side data

integrate SQLite

develop reactive UIs

collaborationautomated workflowworkflowslow-code/no-codedeepfake"AI Agents"face swappinggithub copilotopen-source

Capabilities

Key features

Local-first app development
Real-time reactive apps
Embedded SQLite client
Client-server data sync
Multiple database support
React Native SDK
Web SDK

Target Audience

ux designer

Integrations

reactreact-nativevueangularnextjssupabasepostgresmongodb+ 4 more

Pricing & Plans

Open Source

Free

FAQs

What databases can PowerSync synchronize with on the server-side?

PowerSync supports synchronization with a variety of server-side databases, including Postgres, MongoDB, MySQL, and SQL Server. This flexibility allows developers to integrate PowerSync into diverse existing backend infrastructures.

Does powersync-js support both web and mobile applications?

Yes, powersync-js is a monorepo that includes SDKs specifically designed for both web and mobile environments. It offers a JavaScript Web SDK and a React Native SDK, enabling local-first and real-time features across platforms.

Are there integrations available for popular JavaScript frameworks?

PowerSync provides integrations for popular JavaScript frameworks and libraries. This includes dedicated packages for React, Vue, and TanStack Query, simplifying the process of building reactive UIs with PowerSync.

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