The primary focus of NetAdvantage for jQuery is a set of extensions to the open source JavaScript library for creating data-driven applications that can access data on the server (through services) or embedded in the page. But, in some ways, NetAdvantage for jQuery is an odd package. Infragistics has included several non-client, .NET, server-side resources: libraries for managing XPS and PDF documents and for working with both Word and Excel files. Other components that go beyond jQuery are a better fit for the product's title -- namely, a set of ASP.NET MVC helpers to facilitate generating client-side code for jQuery extensions, and the necessary libraries to integrate the extensions into ASP.NET MVC applications. But what a developer is looking for in a client-side jQuery package are JavaScript libraries that extend jQuery. Here, the jewel in the crown is the Infragistics igDataSource control. The igDataSource, similar to the ASP.NET DataSources, makes a variety of data look alike.