Grammarly is an online writing tool that provides grammar and spell-checking services to help users improve their writing. It uses natural language processing and machine learning algorithms to detect errors in grammar, spelling, and punctuation.

Grammarly can be used for a wide range of writing tasks, from emails to academic writing, and can be customized to suit the user’s preferred writing style. In addition to correcting errors, provides suggestions for improving sentence structure, word choice, and writing clarity.