In the world of Rich Internet Applications (RIA) development, Ext JS stands out as a
cross-browser JavaScript library that offers the applications developer a powerful toolset.
With a set of customizable user interface widgets similar to those found in desktop operating
systems, an effective data binding model, a comprehensive programming interface for
manipulating the Document Object Model and communicating with the server, a committed
development team, and an enthusiastic users' community, the Ext JS library is a great choice
for today's web builders.