VisualVM - VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling...
JConsole - Provides information about performance and resource consumption for Java applications.
Eclipse Memory Analyzer - The Eclipse Foundation - home to a global community, the Eclipse IDE, Jakarta EE and over 350 open source projects, including runtimes, tools and frameworks.
JProfiler - JProfiler is the leading Java Profiler for profiling on the JVM. JProfiler's intuitive UI helps you resolve performance bottlenecks, pin down memory leaks and understand threading issues.
MindArray IPM - Unified Network Monitoring Tool, Application Monitoring, Log Management, Asset Management, Service desk, Help desk & IT Service Management. Get free trial.
Netbeans - NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.