Given the recent technological advancements and the critical role that grammar plays in students' writing development, several digital tools that provide computer-mediated corrective feedback have emerged. One such tool is Grammarly, which identifies duplicate content and errors in grammar, vocabulary, mechanics, and language style. This tech review, therefore, provides an overview of its affordances and how they can be used in English as a Second Language (ESL) and English as a Foreign Language (EFL) writing. While Grammarly can be a powerful tool that teachers and students can explore in their writing classrooms, it has some limitations that require further enhancements.