Dialogflow - Conversational UX Platform. (ex API.ai)
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
WhatsApp Business - Communicate more efficiently with your customers
Botpress - Open-source platform for developers to build high-quality digital assistants
WhatsApp Chatbots by SendPulse - No-code chatbots and shared inbox for WhatsApp