Grammarly is a writing tool that helps users improve the clarity, grammar, and style of their writing. It is available as a web-based service and also has apps for desktop computers and mobile devices.Grammarly works by analyzing a user's writing and identifying errors, such as grammatical mistakes, spelling errors, and punctuation errors. It then suggests corrections and provides explanations and examples to help users improve their writing. In addition to its grammar and spelling checking features, Grammarly also offers tools for checking the style and clarity of writing, and for suggesting synonyms and alternative word choices.Grammarly is used by a wide range of individuals and organizations, including writers, students, and businesses, to help improve the quality and clarity of their written communication. It is available as a paid subscription service, with different pricing plans available depending on the features and level of support required.