spaCy - spaCy is a library for advanced natural language processing in Python and Cython.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Google Cloud Natural Language API - Natural language API using Google machine learning
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
monkeylearn - Text Mining Made Easy. Extract and classify information from text. Integrate with your App within minutes.
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