Whapi.Cloud - Integrate WhatsApp without limits to your own services or apps! Groups & Buttons, Technical support & Guides. API works stably and does not crash during updates. Whapi.Cloud is Developer-friendly REST API for WhatsApp integration
TapTalk.io - TapTalk.io is a complete in-app chat SDK and messaging API - Easy integration and customizeable.
WATI - No-code chatbot builder for WhatsApp Business
Lets Chat - Open source self-hosted chat app for small teams
edna.io - Start communicating with customers on WhatsApp Business, Apple Business Chat, Viber for Business, Web & Mobile App Chat
MongooseIM platform - The massively-scalable XMPPJabber mobile messaging platform, for mobile and web, by Erlang Solutions