Keeping your frontend in sync with your backend especially in real-time and offline scenarios has always been a nightmare. Between polling, WebSockets, conflict resolution, and unreliable network connections, most developers either roll out overly complex systems or compromise on user experience.
But recently, I came across something that changes the game:
💡 PowerSync a blazing fast, offline-first sync engine built on Postgres and WebSocket.
It’s designed to help developers build modern apps with real-time sync, offline support, and zero polling without sacrificing simplicity or performance.
What is PowerSync?
PowerSync lets you build apps where local and remote data stay in perfect sync automatically. It works by syncing changes between a Postgres backend and a client-side database (like SQLite) using **WebSocket **and delta-based sync logic.
Highlights:
- Offline-first out of the box
- Syncs data in real-time (both ways)
- Uses Postgres + WebSocket under the hood
- Works seamlessly with mobile, web, and desktop
- Native SDKs for React-Native, React, and more
You get a local-first experience without writing a custom sync engine from scratch.
Getting Started
PowerSync supports a growing list of platforms. Here’s where to get started:
- Flutter – for mobile apps and Flutter Web
- React Native – supports mobile and React Native Web
- JavaScript Web – including integrations for React and Vue
- Kotlin Multiplatform
- Swift
- Node.js (alpha)
- .NET (alpha)
Explore Live Demos & Example Projects
Want to see PowerSync in action? The team has put together a collection of live demos and open-source example projects to help you understand how real-time sync and offline-first capabilities work in practice.
👉 View all demos & example projects →
These include:
- To-Do List Apps with real-time updates and offline syncing
- Chat Apps demonstrating message sync and conflict-free behavior
- Mobile apps using Flutter, React Native, and more
Each demo is tied to an open-source repo you can fork, run, or study — perfect for learning or integrating into your own product.
Whether you're building a mobile CRM, logistics tracker, or collaborative SaaS tool, these examples give you a real feel for how PowerSync works in production.
Final Thoughts
If you’re building apps that need to work offline, update in real-time, and stay in sync without hacks, PowerSync is the most promising solution I’ve seen in a long time.
Whether you’re working on a SaaS platform, a mobile CRM, a logistics tracker, or a collaborative app — this tool is worth exploring.
Give it a try, and let me know what you think!
Got questions or want help getting started? Drop a comment below .
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