"he Java Portlet Specification (originally created through JSR-168) provides a standard for developing portal components with the Java programming language. This specification, originally released in October of 2003, is gaining popularity as not only a standard for traditional portals, but also as a framework for deploying 'plugins' for standard Web applications. Apache Pluto is the reference implementation of the Java Portlet Specification. In addition to implementing the container interface required by the specification, the Pluto project provides a simple portal (driver) and other utilities which can be used to develop standard Portlets.
"This article provides a basic introduction to the Pluto Portal Driver. It will investigate the basic architecture of the portal driver and introduce the development utilities and techniques. This article discusses the Pluto Portal Driver version 1.1..."