Tars - TARS enables users to create chatbots that replaces regular old webforms.
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.
monosay - Intelligent Bot Platform
Dialogflow - Conversational UX Platform. (ex API.ai)
IBM Watson Assistant - Watson Assistant is an AI assistant for business.
Blutag - Blutag enables a voice based shopping experience for your store.