LanguageTool is a free online proofreading service offering a wide range of features for grammar and spelling checks in over 30 languages. Key features and advantages include:

• AI-based grammar checker: Ensures accurate text proofreading for casual and professional use
• Wide compatibility: Browser add-ons, Office plugins, desktop apps, email add-ons, and editor apps for various platforms
• Premium features: Rephrasing tool, Picky Mode for advanced punctuation, and style and typography suggestions

Use cases for LanguageTool cater to various users:

• Writers and editors seeking to improve the quality of their texts
• Businesses and organizations requiring accurate communication in multiple languages
• Students and professionals looking to polish their written work

Trusted by numerous organizations, LanguageTool offers a 20% discount for its Premium version, providing an accessible and comprehensive proofreading solution.