OpenWA

Free, self-hosted WhatsApp API gateway with REST API, multi-session support, webhooks, and dashboard.

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A free, open-source self-hosted WhatsApp API gateway that provides programmatic messaging via a REST API, multi-session management, webhooks with HMAC signatures, and a React dashboard. It reduces reliance on paid gateway services and vendor lock-in by offering pluggable database, storage, and cache options, Docker support, API key auth, and an optional MCP server for agent-driven messaging, aimed at developers and automation teams seeking full control over messaging infrastructure.

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