Tars - TARS enables users to create chatbots that replaces regular old webforms.
Conversational Form - Turning web forms into conversations. By SPACE10
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.
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
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.