Grammarly is described as «Editor is an automated proofreader that corrects contextual spelling mistakes, checks for more than 250 common grammar errors, enhances vocabulary usage, and suggests citations» and is a very popular Grammar Checker in the education & reference category. There are more than 50 alternatives to Grammarly for a variety of platforms, including Online / Web-based, Windows, Mac, Linux and Android. The best alternative is LanguageTool, which is both free and Open Source. Other great apps like Grammarly are Hemingway Editor, Slick Write, ProWritingAid and Grammar Checker Academic.Grammarly alternatives are mainly Grammar Checkers but may also be Translators or SEO Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Grammarly.