EJTools JMX Browser
The EJTools JMX Browser is a tool which allows to view and interact with the JMX space in a JMX compatible implementation.

JMX4Ant
JMX4Ant is a set of optional Ant tasks that allows interactions with JMX MBeans.

MC4J
This software connects to J2EE application servers in order to expose standard and custom information via the JMX specification. It provides the ability to browse existing managed beans (MBeans), update configurations, monitor operation and execute tasks.

MX4J
MX4J is a project to build an Open Source implementation of the Java(TM) Management Extensions (JMX) and of the JMX Remote API (JSR 160) specifications, and to build tools relating to JMX.

Panoptes
Panoptes is a graphical JMX Management Console for JFace/SWT. Panoptes is designed to work with any JMX Server such as JBoss or Tomcat or any J2EE server. Panoptes uses Jelly to provide customized rich user interfaces for MBeans using the powerful widget set of JFace/SWT.

XMOJO
The XMOJO project is a free open source implementation of JMX specification. This implementation is derived from AdventNet's JMX implementation, which has been available in the industry since 1999. Apart from complete implementation of JMX specification, XMOJO also contains contributions of adaptors, such as HTML and RMI and rich tools, such as MBean Browser.