Jakarta Struts is incredibly useful in helping you to create excellent Web applications because Struts uses a specific paradigm, or design pattern, to structure any application and the design pattern is called Model-View-Controller (MVC). So, struts framework is widely used and widely adapted.

 
 Struts 1.3 framework has widely adapted so used in most of projects like:-
Telecom domain applications.
Finance/banking domain applications.
e Learning and e Shopping applications.
Defiance application.
Web based enterprise applications.
We can also use Struts where we need to implements a centralized controller and application has MVC design pattern. We can use Struts where we need becaues
High Reliability.
Easier Maintainability.
High Reuse and adaptability.
Very Low Development Cost.
Rapid Development.



Struts 2.0 Tutorial and Example
Spring 2.5 Tutorial and Example
Spring 2.5 MVC Tutorial
Spring 2.5 MVC Example