Grammarly

Grammarly is an AI-powered writing assistant for individuals, teams, and enterprises that provides real-time feedback and generative help wherever people write (web, desktop, mobile, and browser extension).

Key capabilities include:

• Real-time writing suggestions for grammar, spelling, clarity, concision, engagement, and tone as text is typed.
• Generative AI assistance for outlining, drafting, ideation, rewriting, and full-sentence rewrites, including tone adjustments (with prompt-based usage limits by plan).
• Multilingual support for writing and in-line rewrites/translation in English, Spanish, French, German, Portuguese, and Italian.
• Cross-app integrations that work without copy-pasting across many sites and tools, including Gmail, Microsoft Outlook, Google Docs, Microsoft Word, Slack, and Microsoft Teams.

Pricing: Freemium. Free plan includes basic writing help and 100 AI prompts. Pro costs $12 per member/month billed annually (or $30 billed monthly) and includes 2,000 AI prompts/month. Enterprise is sales-contact with unlimited prompts.

Notable for combining in-context editing across apps with advanced capabilities such as plagiarism detection, brand tones/style guides for organizations, and a large installed base (over 40 million people and 50,000 organizations).