Grammarly is the world’s most widely used AI writing assistant, helping over 30 million people and 70,000 professional teams communicate more effectively every day. Founded in 2009 and headquartered in San Francisco, Grammarly has evolved from a simple grammar checker into a sophisticated AI-powered writing companion that enhances clarity, tone, and overall communication quality across every platform where you write.
The tool works seamlessly in the background across web browsers, desktop applications, and mobile devices, catching grammatical errors, suggesting style improvements, and even detecting the emotional tone of your writing in real time. Its advanced features include a plagiarism checker that scans billions of web pages, customizable brand tone profiles for business teams, and full-sentence rewrites that help you express complex ideas more clearly and concisely.
Available on virtually every platform including web, Windows, Mac, iOS, and Android, Grammarly integrates with the tools professionals already use, from Google Docs and Microsoft Office to Slack and email clients. The generous free plan covers essential grammar and spelling corrections, while premium tiers unlock advanced style suggestions, tone adjustments, and team analytics that make Grammarly indispensable for anyone who wants to write with confidence and professionalism.