All content displayed by Data-Stream is based on web parts. Web parts are the basic building blocks of page. The web part may display text, menu, search dialog or it can display some any other form of dialog.
It is very easy to create your own web parts. The web parts are standard ASCX user controls that can be created in Visual Studio 2005 or Visual Web Developer 2005 Express Edition. You can even create them using Notepad, without any compilation. Data-Stream is delivered with a rich set of web parts, some of which are listed below: