I have been working on such a beast for a few months now and am almost ready to realease a beta version that will act as a release candidate for v1.0. An older beta version of the program, called ZooZ, can be found in my CPAN directory.

Note that the CPAN version is very old. Many missing features have been implemented and many bugs have been ironed out. I just need to do a little more testing before releasing the beta version. Once I do this, I will announce it on comp.lang.perl.tk. Any comments and bug reports are very welcome.