We are building the open source chat layer for modern apps.

Open source chat infrastructure

Your app needs chat. Ship it in 60s.

Get in 60s what takes sprints to build: chat infrastructure that lives inside your app.

CLI

Prompt

MCPSoon

SkillsSoon

npm install @chatpack/core

Add 1:1 chat to your app using ChatPack.

Install @chatpack/core. Create lib/chatpack.ts with chatpack(), configure your database URL and secret, add the chat component to your page, and start sending messages.

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0-headache Install

Built to scale

Never pay per-message

Plugin-based

Customize everything

Works with:

Quick Start

Up and running in one command.

About ~10 lines of code. No account required, no hosted service to sign up for. Your database, your infrastructure, your users. Stays free forever.

terminal

npm

pnpm

bun

npm install @chatpack/core @chatpack/adapter-drizzle

import { chatpack } from "@chatpack/core"

import { memoryAdapter } from "@chatpack/adapter-memory"

const chat = chatpack({ storage: memoryAdapter(), ... })

await chat.api.sendMessage({ body: "Hey, it works!" })

Install the package

Add @chatpack/core and a storage adapter. Works with npm, pnpm, and bun.

Connect your stack

Point Chatpack at your database and your auth. You own your users and data.

Ship

Wire it up in a few lines and go live. Messaging, real-time, and the details handled for you.

What you get

Everything messaging needs to feel real.

Available Now

Messaging

Conversations with persistent history, editing, and deletion wired straight to your database.

Available Now

Real-Time

Messages and live signals arrive instantly over one stream, with automatic reconnect and nothing lost.

Available Now

Presence & State

Who's around, what's delivered, what's been seen — durable state you own and control.

Built In

Your Stack, Your Rules

Your database, your auth, your users. Chatpack never owns accounts or hosts your data.

Open Source

Grows With You

A small core you extend with plugins; new capabilities land without changing how you build.

Roadmap

Built in the open, moving fast.

ChatPack is actively being built. Here is where things stand and where they are going.

NOW

1:1 real-time messaging

Typing indicators over SSE

Read and delivered receipts

Persistent message history

React and Next.js components

Self-hosted, Postgres-backed

Push and in-app notifications

Group chats (WhatsApp-style)

File and media attachments

Message reactions

Vue and Svelte components

Expo / React Native support

LATER

Discord-style channel rooms

One-to-many broadcast channels

End-to-end encryption

Moderation tooling

Analytics and delivery insights

Managed hosted option

Built for security

ChatPack is the fastest way to add chat to your app.

CHATPACK

5 Minutes

HOSTED CHAT SDK

2 days

+ vendor lock-in, per-seat pricing

576x slower

BUILD IT YOURSELF

6 Weeks

Time from empty project to working 1:1 chat.

One command

Add chat to any existing app.

Drop ChatPack into a project you're already building. Works alongside your current stack, no rewrites needed.

npm install @chatpack/core

Simple API

Chat in ten lines.

Drop ChatPack into a project you're already building. Works alongside your current stack, no rewrites needed.

TYPESCRIPT

import { chatpack } from "@chatpack/core";
import { memoryAdapter } from "@chatpack/adapter-memory";
const chat = chatpack({
  storage: memoryAdapter(),
  auth: async (req) => getSessionUser(req),
});
const { id } = await chat.api.getOrCreateConversation({
  userId: "user_alice",
  otherUserId: "user_bob",
});
await chat.api.sendMessage({
  userId: "user_alice",
  conversationId: id,
  body: "Hey, it works!",
});

Your app needs chat. Ship it in 60s.

Up and running in one command.

Everything messaging needs to feel real.

Ship chat before your standup ends.

Built in the open, moving fast.

ChatPack is the fastest way to add chat to your app.

Add chat to any existing app.

Chat in ten lines.