LanguageTool checks your writing for grammar mistakes, spelling errors, punctuation and awkward style, and suggests fixes as you type. It supports many languages and dialects, not just English, and includes an AI paraphrasing tool for rewording sentences.
You can paste text into the online editor without an account, or install the add-on for Chrome, Edge, Firefox, Gmail, Outlook, Google Docs, Word or LibreOffice so that corrections appear wherever you write. Desktop apps are available for Windows and macOS.
The free version checks up to 2,000 characters per text field and allows only a few AI rephrasings per day. Premium raises the limit to 150,000 characters and adds a personal style guide, picky mode, text statistics and unlimited paraphrasing. Premium prices were not visible on the pricing page when we checked, so confirm them on the site; the company offers a 14-day money-back guarantee.
The pricing page says Premium can be paid with PayPal or credit card, which helps if you do not have a dollar card.