Things for Java

This is a bucket of 4J things, mostly libraries that match the pattern /[.]*4J/

License information is provided as a hint only and may have changed by the time you read this. Hire a lawyer if the difference between Apache, MIT, and BSD licenses are important to you, or at the very least confirm that I’ve listed the right license and understand how it may impact your project.


Logging framework for Java.



Graph database, a stand-alone product/platform build with Java and running in a JVM.



Recommendation engine.



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.

JMX is an optional package for J2SE that provides a standard way to manage applications. It can also be used to wrap legacy systems and provide a standard interface to the outside world, enabling the development of web services. JMX allows developers to write more modular and loosely coupled system components and reduce the complexity of large, interoperating systems.


MX4J is released under an Apache-style license: The MX4J License, Version 1.0