Grammarly

Grammarly is the world's most widely used AI writing assistant, helping over 30 million people and 70,000 teams communicate more effectively every day. It goes far beyond basic spell-check, offering real-time corrections for grammar, punctuation, clarity, conciseness, and tone across virtually every platform you write on. The browser extension works seamlessly in Gmail, Google Docs, LinkedIn, Slack, and hundreds of other sites, while native desktop and mobile apps for Windows, macOS, iOS, and Android ensure complete coverage regardless of where you write. Grammarly's tone detector analyzes the emotional delivery of your message before you hit send, flagging when your words might come across as harsh, uncertain, or overly casual for the context. The AI-powered rewrite suggestions go beyond simple corrections to offer full-sentence restructuring that improves flow and impact while preserving your intended meaning. The Premium tier adds advanced checks for word choice, inclusive language, fluency, formality level adjustments, and full-sentence rewrites that transform awkward phrasing into polished prose. The plagiarism detector scans your text against 16 billion web pages, academic papers, and published works. For teams, Grammarly Business offers a centralized admin dashboard, custom style guides, brand tone profiles, snippet libraries for consistent messaging, and detailed analytics on writing improvements across the entire organization. Enterprise features include SAML SSO, SCIM user provisioning, and data loss prevention controls. HIPAA and SOC 2 Type II compliance make it suitable for healthcare, finance, and other regulated industries that need to balance writing quality with data security.