Grammarly

Grammarly is an AI writing assistant that checks grammar, clarity, and tone in real time and now drafts and rewrites text with generative prompts. The thing that keeps it relevant after all these years is reach: it works inside the browser, desktop apps, mobile keyboards, and tools like Google Docs and Microsoft Office, so it follows your writing almost everywhere instead of trapping it in one editor. It suits professionals polishing email and reports, students tightening essays, and anyone who wants a second set of eyes before hitting send.

Corrections arrive as you type, and the better ones explain the reasoning behind a fix, so your writing actually improves rather than just getting patched. The toolkit also covers tone detection, paragraph rewrites, paraphrasing, plagiarism and AI detection, and citation help. Grammarly is explicit that it does not sell user content or use it for advertising, which matters for sensitive work. It now sits within the broader Superhuman productivity suite.

Pricing is freemium. The free tier handles core grammar, tone, and a monthly allotment of AI prompts, while paid plans add rewrites, a larger prompt budget, and team and enterprise controls. For most writers, the free tier is a genuinely useful starting point.