OpenWA

What OpenWA is

OpenWA is a free, open-source, self-hosted gateway that lets applications send and receive WhatsApp messages through a REST API. It handles text, images, video, audio, documents, and stickers, plus reactions, replies, forwards, and bulk sends. One instance can run several WhatsApp accounts, authenticated by QR code or pairing code. Real-time webhooks deliver message and session events to endpoints, with requests signed using HMAC. A bundled dashboard manages sessions, webhooks, and API keys. Operators can configure SQLite or PostgreSQL, local or S3/MinIO media storage, and optional Redis caching. OpenWA supports Baileys, a browser-free WebSocket client, and whatsapp-web.js, which uses Chromium and Puppeteer. Documented integrations include community nodes for n8n and SDKs for JavaScript/TypeScript, Python, and PHP. Listed controls include API-key authentication, scoped keys, IP allow-lists, rate limiting, and audit features. OpenWA says sessions, messages, and media stay on the user's server. It relies on unofficial, reverse-engineered WhatsApp clients, and its documentation says account restriction or ban risk is non-zero. Production deployment specifies a Linux host with Docker Engine and the Docker Compose plugin.

Who it suits

It suits developers or operators who want to self-host a WhatsApp messaging API and control where sessions, messages, and media remain. Production deployment requires a Linux host with Docker Engine and the Docker Compose plugin.

Limits

The OpenWA plan is free forever, MIT licensed, and has no paid tier or feature gates. It requires self-hosted deployment; production deployment specifies Linux, Docker Engine, and the Docker Compose plugin.

Getting started

1. Visit the OpenWA website.
2. Prepare a Linux host with Docker Engine and the Docker Compose plugin for production.
3. Deploy OpenWA as a self-hosted service.
4. Choose an authentication method for each WhatsApp account: QR code or pairing code.
5. Use the web dashboard to manage sessions, webhooks, and API keys.

Verdict

OpenWA offers self-hosted WhatsApp messaging with multiple account sessions, webhooks, and configurable storage. Its reliance on unofficial clients and the stated non-zero account risk are central considerations before deployment.