LanguageTool is a free grammar checker and paraphraser for English, Spanish, and 30 other languages. It helps users identify and correct grammar and style mistakes in their written text. LanguageTool offers a range of core features, including a Grammar Checker to find mistakes and suggest the right tone, a Style Checker to improve writing style, a Spell Checker to detect and correct spelling errors, a Punctuation Checker to fix punctuation errors, a Casing Checker to correct incorrect casing, and a Paraphraser to rephrase sentences using artificial intelligence. Use cases for LanguageTool include writing emails, blogging, academic writing, and professional writing in industries such as journalism and content creation. To use LanguageTool, simply visit the website or install the browser add-on for Chrome, Edge, Firefox, Safari, or Opera. Once installed, LanguageTool will automatically detect the language you are using and provide suggestions for grammar and style improvements. You can also integrate LanguageTool with your favorite office programs such as Google Docs, Microsoft Word, LibreOffice, and OpenOffice.