Dialogflow - Conversational UX Platform. (ex API.ai)
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Botpress - Open-source platform for developers to build high-quality digital assistants
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Meya.ai - Build, train and host sophisticated bots.
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.