PyText - Facebook's open source conversational AI tech
spaCy - spaCy is a library for advanced natural language processing in Python and Cython.
Facebook DeepText - Facebook's text understanding engine
NLP Cloud - High performance AI models, ready for production, served through a REST API. Fine-tune and deploy your own models. Easily use generative AI in production.
smileML - User research powered by emotion recognition
TextBlob - Natural Language Processing (NLP)