Description:

Pluto is the Reference Implementation of the Java Portlet
Specfication. The current version of this specification
is JSR 168.
Portlets are designed to run in the context of a portal.
They are written to the Portlet API which are similar to
the Servlet API.
A portlet container provides a runtime environment for
portlets implemented according to the Portlet API. In
this environment portlets can be instantiated, used and
finally destroyed. The portlet container is not a
stand-alone container like the servlet container; instead
it is implemented as a thin layer on top of the servlet
container and reuses the functionality provided by the
servlet container.
Pluto serves as portlet container that implements the
Portlet API and offers developers a working example
platform from which they can test their portlets.