Heytools - JavaScript tools, AJAX tools and some fully server side tools.
Quantxt - Quantxt is a software platform for processing, search, and discovery in unstructured content using NLP techniques.
WordCounter.net - Count words, sentences, paragraphs etc.
FuzzyWuzzy - FuzzyWuzzy is a Fuzzy String Matching in Python that uses Levenshtein Distance to calculate the differences between sequences.
TextBuddy for macOS - A Swiss Army knife for plain text.
spaCy - spaCy is a library for advanced natural language processing in Python and Cython.