Amazon Comprehend - Discover insights and relationships in text
PyText - Facebook's open source conversational AI tech
FuzzyWuzzy - FuzzyWuzzy is a Fuzzy String Matching in Python that uses Levenshtein Distance to calculate the differences between sequences.
Facebook DeepText - Facebook's text understanding engine
spaCy - spaCy is a library for advanced natural language processing in Python and Cython.
Google Cloud Natural Language API - Natural language API using Google machine learning