MX4J is an Open Source implementation of the JMX technology (JSR 3) and of the JMX Remote API (JSR 160). It aims to create JMX-related tools such as adaptors, connectors, and utility MBeans. JMX is the Java standard used to create manageable server-side applications, and it is used as a base architecture for many popular J2EE application servers, such as JBoss, BEA, Geronimo, etc.
Furies is a Java-based Web site testing tool which relies on many Jakarta components. Its goal is to ensure a Web page is "correct" by running one or more conditions on it. The Furies distribution supplies some conditions and it is very easy to program your own. For accessing Web sites, Furies relies on HttpClient and configuration may be done programmatically or via Digester.