PartyKit Has a Free Real-Time Collaboration Platform — Build Multiplayer Apps Without Infrastructure

PartyKit Has a Free Real-Time Collaboration Platform

Building real-time features — collaborative editing, live cursors, multiplayer games — usually means WebSocket servers, Redis pub/sub, and connection management. PartyKit handles all of it.

What PartyKit Does

PartyKit gives you stateful, real-time servers that run at the edge on Cloudflare Workers:

• WebSocket servers with persistent state per room
• Edge deployment — runs close to users globally
• Hibernation — servers sleep when idle, wake on connection
• Built-in storage — durable state without external databases
• Y.js and CRDT support — collaborative editing out of the box

Quick Start

npx create-partykit-app my-app
cd my-app

# Your server (server.ts)
export default class MyParty {
  connections = new Set();

  onConnect(conn) {
    this.connections.add(conn);
    conn.send(JSON.stringify({ type: "welcome", users: this.connections.size }));
  }

  onMessage(message, sender) {
    // Broadcast to all other connections
    for (const conn of this.connections) {
      if (conn !== sender) conn.send(message);
    }
  }
}

# Deploy
npx partykit deploy

Free Tier

Resource	Free
Connections	20 concurrent per room
Rooms	Unlimited
Requests	100K/day
Storage	1MB per room

Real Use Cases

• Figma-like cursors — sync cursor positions in real-time
• Collaborative text editors — with Y.js CRDT integration
• Live dashboards — push updates to connected clients
• Multiplayer games — shared game state with low latency
• Chat rooms — persistent rooms with message history

Why PartyKit Over Raw WebSockets

1. Stateful by default — each room has its own state
2. No infra — no WebSocket servers to manage
3. Hibernation — pay nothing when rooms are idle
4. CRDT built-in — conflict-free collaborative editing
5. Deploy in seconds — one command to go global

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Building real-time features? I help teams implement collaborative and multiplayer experiences with PartyKit and WebSockets.

📧 [e-mail] — Real-time architecture consulting

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