Grammarly is a writing assistance and communications platform that helps its 40 million daily users improve clarity, correctness, tone, and style. Grammarly integrates with over 500,000 applications and websites to deliver real-time suggestions and writing support.

Grammarly has free and paid plans for individual users, but is widely integrated in businesses and institutions through its enterprise plans. It's common for students to use Grammarly as a writing coach to help improve their writing quality and clarity.