Resumen:
It is fundamental to develop the four skills to achieve a high level of English. Studies show
that writing skill is the most complex in the English language due to the structure and vocabulary that people must know before writing a letter, article, or single paragraph. For this reason, this research project is called "Grammarly as a proofreading tool to enhance the writing skill of 10th-grade students” Where qualitative research was accomplished in which the main obje ctive was to analyze if Grammarly as a proofreading application can be used as a work resource to enhance the writing skill of students. As a result of this research project, it can be described how the Grammarly application is beneficial for students who are able to determine the strengths and weaknesses of their texts, as it provides feedback besides suggestions on their writing, and they can realize their mistakes.