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WhatsApp APIs & Tools

OpenWA

Free, open source WhatsApp API gateway, self-hosted with a pluggable architecture.

OPEN SOURCEwhatsapp-apiopen-sourceself-hostedgateway
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What's included

OpenWA is an open-source, self-hosted WhatsApp HTTP API gateway built on a pluggable and modular architecture for developers requiring complete control over their tech stack. The platform enables developers to connect WhatsApp instances and interact with them via REST endpoints and WebSockets, allowing custom swapping of database, caching, storage, and engine layers. It supports rich media messaging, group automation, event listeners, and real-time webhook routing while keeping data strictly within self-managed infrastructure. It is designed for backend developers, data engineers, and security-conscious organizations that must comply with strict privacy policies and avoid vendor lock-in. The project is open source and entirely free to use.