Ext JS

Ext JS is a pure JavaScript application framework for building interactive web applications using techniques such as Ajax, DHTML, and DOM scripting. 
 
The main features of Ext JS are GUI Control 
 
Ext JS includes a set of GIU control for Web Application 
 
Control Like 
  1. Charts
  2. Grid
  3. Calendar
  4. Web Desktop
  5. Tabs
  6. Windows
  7. Tree
  8. Layout Manager
  9. Drawing
  10. Drag and Drop
  11. Toolbar and Menus
  12. ComboBox
  13. DataView
  14. Forms