nlp_compromise - NLP tool for understanding, changing & playing w/ english.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
JAICP - JAICP (Just AI Conversational Platform) is a full-fledged conversational platform: scalable, NLP-powered, and secured. Build chatbots, voice assistants, smart devices in the snap of a finger
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
Sentigrade - A sentiment analysis API for customer surveys
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.