PyText - Facebook's open source conversational AI tech
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Facebook DeepText - Facebook's text understanding engine
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
smileML - User research powered by emotion recognition
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.