ag-Grid is a highly flexible and advanced JavaScript data grid library designed for building feature-rich and high-performance applications. It is widely used in enterprise applications due to its extensive range of features, including support for all major JavaScript frameworks like Angular, React, and Vue. ag-Grid offers functionalities such as sorting, filtering, grouping, and virtual scrolling, enabling developers to easily manage and manipulate large datasets. It supports both community (open-source) and enterprise (commercial) editions, catering to various business needs.