Grammarly

Grammarly is an AI-powered writing assistant that checks text for grammar, spelling, punctuation, clarity, and tone as people write. It works across many applications and browsers, offering inline suggestions in email, documents, and web forms, and includes generative features that can rewrite, shorten, or draft passages on request. Suggestions aim to make writing clearer, more consistent, and appropriate for the intended audience.

The tool serves students, professionals, writers, and teams who want more polished communication without switching between separate apps. Business and enterprise plans add shared style guides, brand tone controls, and administrative features, while individual users get real-time feedback wherever they type.

Founded in 2009 and headquartered in San Francisco, Grammarly has grown into one of the most widely used writing tools, valued in the billions. It offers a free tier covering core corrections alongside premium and team plans that unlock advanced clarity, tone, and generative capabilities.