JDebugTool www.debugtools.com is a standalone graphical Java debugger built on top of the standard JPDA (Java Platform Debugger Architecture).

* In this release, JDebugTool will now start up even if the tools.jar file is not in the classpath used to invoke JDebugTool. The parts of the GUI that do not depend upon tools.jar, are still usable. However, in order to actually debug a target JVM, the tools.jar must be present in the classpath used to invoke JDebugTool.

* The Stepping Excludes (Execution | Excludes...) no longer mask explicitly opening a Java source file (for example, clicking on a Java source file in the Source Tree panel).