Tars - TARS enables users to create chatbots that replaces regular old webforms.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Phonexia Voicebot Suite - Phonexia Voicebot Suite is an all-in-one voicebot-building solution for the rapid, on-premise development of highly sophisticated conversational AI interfaces for contact centers and other automated systems.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Dialogflow - Conversational UX Platform. (ex API.ai)
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.