Grammarly is an AI-powered writing and communication assistant that helps users improve grammar, spelling, punctuation, clarity, tone, and overall writing quality. It works directly across websites, desktop applications, word processors, email clients, and mobile apps.

Beyond proofreading, Grammarly provides generative AI features for drafting, rewriting, brainstorming, summarizing, and improving written content. Its tools also include plagiarism detection, citation assistance, tone suggestions, style guides, brand tones, and translation capabilities.