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)
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Jotform - Free Online Form Builder & Form Creator
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.