Bugs is an OpenTool add-on for the JBuilder IDE.
This tool is not one that is amenable to detailed descriptions -- it is one that you will just have to try to see what it does. You might describe it as a visualization tool; it will make it easier to see bugs in your code. While it will probably not make you more productive, I hope you will enjoy it as much as I enjoyed writing it. :o)
Use of this tool is covered under the GNU GPL. The distribution package contains full source code.