Analyzes Thread Dumps of Sun, SAP and JRockit (partial). Plugins for JConsole and VisualVM available. See Project Wiki for more details. Have a look at my blog "The Dumpster" for news about TDA.
VisualVM - All-in-One Java Troubleshooting Tool. VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling capabilities. Designed for both production and development time use, it further enhances the capability of monitoring and performance analysis for the Java SE platform.