LanguageTool
LanguageTool corrects spelling mistakes, but it also offers a full writing analysis of all possible texts. In addition to spelling, grammar, and word choice, language style is also corrected. It masters more than 30 languages and dialects, and its main languages are English, Spanish, German, French, Dutch, and Portuguese. In its English version, you can choose between six standard varieties. LanguageTool also offers an A.I.-based rephrasing function in addition to correction. This can help you to rewrite entire sentences to make them simpler, shorter, or more formal.