Grammarly

Grammarly is an AI-powered writing assistant that checks grammar, spelling, punctuation, clarity, conciseness, tone, and plagiarism, and it follows you across the places you write — browser, desktop, mobile keyboard, and Microsoft Office.

Core capabilities

• Real-time grammar, spelling, and punctuation checks.
• Style suggestions for clarity, conciseness, and engagement.
• Tone detection with adjustment suggestions.
• Plagiarism detection (Premium), vocabulary enhancement, and goal-setting for audience, formality, and intent.
• Browser extensions, desktop apps, mobile keyboards, and Office add-ins.

Where it fits. Proofreading blog posts, articles, and web copy before publishing; keeping emails and customer messages professional; checking ad and social copy for tone; and holding a consistent brand voice across written communication.

Pricing. A capable free tier covers grammar, spelling, and punctuation. Premium and Business tiers add style, tone, clarity, and plagiarism checks; Premium typically starts around $12/month billed annually. Confirm current pricing on the site.

Practical notes. Treat it as a safety net, not an oracle — apply judgment on stylistic suggestions rather than accepting all of them. The tone detector is genuinely useful for matching intent, and goal-setting tailors suggestions. The free tier is valuable; Premium meaningfully raises the ceiling for professional work. It pairs well with a readability editor like Hemingway, which targets different problems.

Direct link: https://www.grammarly.com/