Grammarly is the most widely used AI writing assistant, with a Chrome extension that brings grammar correction, clarity suggestions, tone detection, and rewriting capabilities to every app in your browser — Gmail, Docs, Slack, Twitter, and beyond. The generative AI features draft, rephrase, and expand text in response to prompts. Grammarly Business adds brand voice controls, style guides, and team analytics. The AI detects tone and suggests adjustments to match the desired register — more formal, more empathetic, more direct. Plagiarism checking compares your text against billions of web pages. With 30+ million daily users, Grammarly has become default writing infrastructure for professionals worldwide. Its broad platform coverage means you never need to leave your current app to get AI writing assistance.