SiteGPT - ChatGPT for every website.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
ChatNode AI - ChatNode lets you train AI ChatBots on your own data.
ChatBot - Easy to use chatbot platform for business
Dialogflow - Conversational UX Platform. (ex API.ai)
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.