Grammarly

The writing assistant trusted by over 30 million people daily. Grammarly goes far beyond basic spell-check — it analyzes tone, clarity, engagement, and delivery to help you communicate effectively in emails, documents, and messages across virtually every platform you write on.

• Grammar & spelling — catches errors that basic spell-checkers miss • Tone detection — identifies how your writing sounds and suggests adjustments • Clarity improvements — simplifies wordy sentences and eliminates ambiguity • GrammarlyGO — generative AI that drafts, rewrites, and brainstorms on demand • Cross-platform — works in browsers, desktop apps, mobile keyboards, and IDEs • Style guides — enforce brand voice and terminology across your organization

Free tier covers core grammar. Premium at $12/mo adds advanced suggestions.