Tomcat Version Advantages 4.x 5.x 6.x

Tomcat 4.x

* Released 2001
* implements the Servlet 2.3 and JSP 1.2 specifications
* servlet container redesigned as Catalina
* JSP engine redesigned as Jasper
* Coyote HTTP connector
* Java Management Extensions (JMX), JSP and Struts-based administrations

Tomcat 5.x

* implements the Servlet 2.4 and JSP 2.0 specifications
* reduced garbage collection, improved performance and scalability
* native Windows and Unix wrappers for platform integration
* faster JSP parsing


Tomcat 6.x

* implements the Servlet 2.5 and JSP 2.1 specifications
* support for Unified Expression Language 2.1
* designed to run on Java SE 5.0 and later
* support for Comet through the CometProcessor interface
* is not packaged with an admin console as in past releases