A profiling tool for Java with a scalable and extensible architecture, allowing its usage for exotic programming languages that use a Java backend. [Open source, GPL]

Helps identify excessive processor usage, memory usage, and synchronization in Java programs. Written in C++; available for Solaris and NT 4.0. The JVM must support JVMPI. [Open Source, GPL/LGPL]

A plugin for the Eclipse platform which allows Java code profiling. [Open source, Common Public License]

Platform-independent tool from Hewlett Packard which helps detect performance bottlenecks by graphically displaying profiling data. [Freeware]

A tool for testing the performance of Java code by runinng a specific part of code many times by a different number of threads. It comes with a Swing GUI for graphical configuration and result representation. [Open Source, GPL]

A performance profiler for Java programs. It collects statistics about accumulated CPU time used by each stack frame in the profiled program and presents the collected data in a GUI. [Open source, GPL]

Java coverage profiler to report what parts of code were not executed; during unit testing, for example. It is a rewrite of JVMDICover. [Open source, LGPL]

Viewer for the old files created by the old java profiler (-prof). [Open source, LGPL]