Machine Learning Playground - Breathtaking visuals for learning ML techniques.
Heytools - JavaScript tools, AJAX tools and some fully server side tools.
ML5.js - Friendly machine learning for the web
NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.
Evidently AI - Open-source monitoring for machine learning models
WordCounter.net - Count words, sentences, paragraphs etc.