Amazon Comprehend - Discover insights and relationships in text
Grammarly - Clear, effective, mistake-free writing everywhere you type.
FuzzyWuzzy - FuzzyWuzzy is a Fuzzy String Matching in Python that uses Levenshtein Distance to calculate the differences between sequences.
GrammarChecker.net - Grammar Checker is an online spell check tool. It effectively works on English sentence correction, Punctuation mistakes of 28 other different languages.
spaCy - spaCy is a library for advanced natural language processing in Python and Cython.
Grammarian PRO3 - Grammarian PRO3 is a feature-rich grammar checker that enables you to write better content without taking assistance from the English teacher.