A peer-to-peer polling application where users create and vote on polls without any central server. All data syncs directly between browsers using WebRTC and CRDTs.

Features

Real-time P2P sync — poll options and votes sync instantly across all connected peers via WebRTC
Collaborative poll title — editable title that syncs between all participants
One vote per user — each peer gets a stable ID, enforcing one vote per person per option
Vote/Unvote toggle — change your mind anytime
Connection status — see when you're connected and how many peers are in the room
Shareable polls — share via URL with ?room=your-poll-name
No backend required — runs entirely in the browser

Tech Stack

Yjs — CRDT library for conflict-free shared state
y-webrtc — WebRTC provider for peer-to-peer connections
Vite — Development server and build tool
Vanilla JavaScript — no framework dependencies

Getting Started

npm install
npm run dev

Open http://localhost:5173/?room=my-poll in multiple browser tabs to test.

To test across devices on the same network:

npm run dev -- --host

Then open the URL shown in the terminal on other devices.

How It Works

Each browser tab creates a Yjs document and connects to other peers via WebRTC
Poll options and votes are stored in Yjs shared data types (Y.Map)
Changes propagate automatically to all connected peers using CRDTs
A public signaling server handles peer discovery; all poll data flows directly between browsers