Ship realtime in an afternoon
One createDendriStore() call gives you rooms, presence, and messaging. Drop-in bindings for React, Vue, and Svelte.
Realtime for your app, without the backend.
Presence, live cursors, chat, video, and collaborative editing — powered by peer-to-peer WebRTC. One small SDK, any framework. Self-host it free, or let us run it.
No per-message billing · Open-source server · Works in every browser
app.ts
// npm install @afterrealism/dendri-client
import { createDendriStore } from "@afterrealism/dendri-client";
const room = createDendriStore({
url: "wss://signal.dendri.dev",
apiKey: "dk_your_key",
});
room.join("design-review");
room.broadcast({ cursor: { x, y } }); // → every peer, instantlyPeer-to-peer, so no message tax
After the handshake, data flows directly between users. You're never billed per message like the hosted realtime clouds.
Self-host or hosted — your call
The server is open source and free to run yourself. Or point the same SDK at our managed endpoint and skip the ops.
Everything you'd build yourself
Batteries included, complexity hidden.
The hard parts of realtime — reconnection, fallback, encryption — handled for you.
Rooms & presence
Group users, see who's online, share typed presence state.
Video & audio
WebRTC media calls with the same room primitives.
Live document sync
First-class Yjs / CRDT provider for collaborative editing.
Always connects
Falls through P2P → STUN → TURN → TLS relay on hostile networks.
End-to-end encrypted relay
When it falls back to relay, payloads stay sealed from the server.
Auto-reconnect
Exponential backoff, offline queueing, seamless resume.
How it works
Three steps to live.
01
Install
Add the framework-neutral client to your app.
npm install @afterrealism/dendri-client
02
Connect
Point it at your key. That's the whole config.
createDendriStore({ url, apiKey })
03
Build
Join a room and broadcast. Peers update live.
room.join("lobby")Pricing
Self-host free, or let us run it.
The server is open source and free forever. Hosted tiers give you a managed endpoint and an API key.
Self-host
$0
Open source, your infrastructure
- Unlimited peers & rooms
- Bring your own TURN
- AGPL-3.0 server, Apache-2.0 SDK
- Community support
Starter
$29/mo
Managed signaling & TURN
- 500 concurrent peers
- 50 GB TURN bandwidth
- 50 rooms, 3 API keys
- Email support, 99.5% SLA
Scale
$299/mo
Production workloads
- 50,000 concurrent peers
- 5 TB TURN bandwidth
- Unlimited rooms & API keys
- Dedicated Slack, 99.95% SLA
After checkout you get an API key by email — sign in to the dashboard to manage it.
Add realtime today.
Start free with the open-source server, or grab a hosted key and skip the infrastructure entirely.