Sencha Ext JS provides everything a developer needs to build data-intensive, cross-platform web applications. Ext JS leverages HTML5 features on modern browsers. Ext JS features 115+ high-performance, pre-tested and integrated UI components including calendar, grids, charts and more. The Ext JS Grid and Advanced Charting package can handle millions of records with ease. The framework includes a robust data package that can consume data from any back-end data source. With Sencha Pivot Grid and D3 adapter, organizations can add leading-edge visualization and analytics capabilities to their web applications. See a comparison with other frameworks.