Open source · Self-hosted · 300 free connections

Realtime messaging
built for developers

The self-hosted alternative to Pusher and Ably. More generous free tier, zero vendor lock-in, full control over your infrastructure.

No credit card required · Deploy in 5 minutes

300

Free Connections

<1ms

Message Latency

Events / Month

100%

Data Ownership

Ready in minutes

A familiar API inspired by Socket.IO and Pusher — zero proprietary lock-in.

Browser / Client

import { ClotPulseClient } from 'clotpulse-js';

const client = new ClotPulseClient({
  host: 'wss://your-domain.com',
  appId: 'app_xxxxxxxxxxxx',
  key:  'pk_xxxxxxxxxxxx',
});

await client.connect();
const channel = client.subscribe('orders');

channel.on('new-order', (data) => {
  console.log('New order:', data.orderId);
});

Server-side publish

import { ClotPulseServer } from 'clotpulse-node';

const pulse = new ClotPulseServer({
  host:      'https://your-domain.com',
  appId:     'app_xxxxxxxxxxxx',
  secretKey: 'sk_xxxxxxxxxxxx',
});

await pulse.publish('orders', 'new-order', {
  orderId: 'ord_9f82',
  total:   149.99,
  status:  'confirmed',
});

Everything you need

Built for production from day one.

Ultra-low latency

Sub-millisecond delivery via Redis pub/sub and persistent WebSocket connections.

Secure channels

Public, private, and presence channels with HMAC-signed tokens and API key auth.

Webhook delivery

Reliable HTTP callbacks with BullMQ retry queue and HMAC-SHA256 signature verification.

Usage analytics

Daily metrics, connection tracking, and event logs in the built-in dashboard.

Self-hosted

Deploy with Docker Compose on any VPS. You own your data, always.

Event history

7-day event log with payload preview and delivery status for every webhook.

Simple pricing

Start free, scale when you need to.

Free

$0forever
  • 1 app
  • 300 connections
  • Unlimited events
View plan

Starter

$19/month
  • 5 apps
  • 2,000 connections
  • 30-day logs
Get started

Pro

$79/month
  • Unlimited apps
  • 10,000 connections
  • Priority support
View plan

Start building for free today

No credit card. Deploy in 5 minutes.

Create account