I believe that LanguageTool[0] is the closest open-source counterpart to Grammarly. Though, in my experience, it is not a half as useful... But multilinugal and

I believe that LanguageTool[0] is the closest open-source counterpart to Grammarly. Though, in my experience, it is not a half as useful... But multilinugal and open-source. I have a distant dream of doing to it what I did to Hunspell (write a code/series of articles explaining how it works and why it is so hard), but we'll see. For what I know, LanguageTool is based just on a huge set of rules (you can see them in the repo[1]); and Grammarly is a mix of rule-based and machine-learning suggestions (I heard a rumor that it is 99% rule-based, and talks about ML are mostly marketing, but I don't know how reliable this rumor was). 0: https://languagetool.org https://languagetool.org 1: https://github.com/languagetool-org/languagetool/tree/master/languagetool-language-modules/en/src/main/resources/org/languagetool/rules/en https://github.com/languagetool-org/languagetool/tree/master...