YourKit Java Profiler is a CPU and memory profiler that makes it easy to solve wide range of CPU- and memory-related performance problems. It features automatic leak detection, powerful tools for the analysis of memory distribution, an object heap browser, comprehensive memory tests as part of your JUnit testing process, extremely low profiling overhead, transparent deobfuscation support, and integration with Eclipse, JBuilder, IntelliJ IDEA, NetBeans, and JDeveloper IDEs.

Changes

Numerous performance improvements were done in the live CPU and "Monitor Profiling" views. The UI of memory inspections was polished. A bug with the times of J2EE methods was fixed. A problem with invocation count columns for CPU tracing snapshots was fixed. A workaround was implemented to start JBoss 3.2.5 and 3.2.6 application servers.

URL: Java Profiler - .NET Profiler - The profilers for Java and .NET professionals