Tars - TARS enables users to create chatbots that replaces regular old webforms.
IBM Watson Assistant - Watson Assistant is an AI assistant for business.
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.
Dialogflow - Conversational UX Platform. (ex API.ai)
SentiOne - Insightful social listening and online reputation management platform.
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.