LanguageTool

Overview LanguageTool is an AI-based writing assistant that checks grammar, punctuation, spelling, and style errors across 30+ languages. It works as a standalone editor, a browser add-on, and an office plugin to catch mistakes in emails, documents, and social media posts. Unlike single-language tools, LanguageTool supports English, German, Spanish, French, Portuguese, Dutch, and many more languages and dialects. It targets anyone who writes regularly — students, professionals, teams, and non-native speakers — and offers a free tier plus Premium upgrades for deeper style and paraphrasing support. Key Benefits Catches grammar, punctuation, spelling, and style errors in real time across 30+ languages. Free browser add-ons work on Chrome, Firefox, Edge, Safari, and Opera and respect privacy by storing no text. Premium tier unlocks unlimited AI-powered sentence paraphrasing, a Style Guide, and up to 100,000 characters per text field (citing >pricing_page_content Team plans include user management, Team Style Guide, and Team Dictionary for groups of 2–20 members. Integrates with over a dozen apps: Gmail, Outlook, Google Docs, Microsoft Word, Apple Pages, Slack, LibreOffice, and more. Personal Dictionary and Statistics dashboard track writing progress and error patterns over time. How It Works A user pastes text into the LanguageTool editor or installs the browser add-on. The AI scans the text automatically as the user types in an email, a blog post, or a document. Suggestions appear inline for grammar, spelling, punctuation, and style; the user accepts, ignores, or adjusts each suggestion. Premium users can also highlight a sentence and run the Paraphrasing Tool to rephrase it. Use Cases Non-native English speakers who want to catch grammar and spelling errors while writing emails or reports in a second language. University students writing dissertations or essays who need style checks and a distraction-free editor with a Personal Dictionary. Marketing and communications teams who use the Team Style Guide to keep brand voice consistent across documents. Freelance writers and bloggers who rely on the browser add-on to proofread tweets, blog posts, and client messages on the web. Editors and proofreaders who manage multiple language pairs and need a single tool for English, German, Spanish, French, Portuguese, and Dutch. Why Choose This Product LanguageTool suits individual writers who want a free, privacy-respecting grammar checker that works across many languages. Teams of up to 20 members get additional management features. Users who need unlimited paraphrasing or advanced style suggestions must upgrade to Premium.