Does anybody tried and knows some profiling tools that run with Classpath (and with which virtual machine)? If not, implementing some profiling may be an interesting and important future task. Some programs like Protege seem having places that are executed unusually slowly. It would be great to do at least some profiling. There are many profiling tools, and there are Free profiling tools also, but even they are created mostly for use with the Sun's jre (despite that jre can do come profiling without any help from the side). Audrius.