Flash Debugger was created for my own Flash projects. At that time nothing like this was available. Its a simple cross platform tool and does its purpose well.
Few years back this utility was available for download from my own server for free but then my server went down and I forgot all about it. Now its available at Google Code.
Its written in Java. Now there are tons of flash debug programs available, thought it might be useful for someone looking for simple hassle free tool.