Current version is 1.0
Download the latest binary version here: JWebChart 1.0
Download the latest source here: JWebChart 1.0 source
This version requires JDK 6 or later and an application engine. Currently tested with Apache Jakarta Tomcat 6.0 and Sun Application Server, the open source version which is Glassfish
I also have this running on my own copy of IBM Websphere Community Edition, which you can test here as long as my development machine is up and running.