Ext JS features hundreds of high-performance UI widgets that are meticulously designed to fit the needs of the simplest as well as the most complex web applications. Ext JS templates and layout manager give you full control over your display irrespective of devices and screen sizes. An advanced charting package allows you to visualize large quantities of data. The framework includes a robust data package that can consume data from any backend data source. Ext JS also offers several out-of-the-box themes, and complete theming support that lets you build applications that reflect your brand. It also includes an accessibility package (ARIA) to help with Section 508 compliance.