My take is that there are no other mod_perl debugging interfaces besides Komodo because the wheel doesn't need reinvented.

Another reason is that we usually write tests, so we spend less time in the debugger and/or run debugging sessions on the test environment instead of in an apache process.

But you can use ptkdb to debug mod_perl apps if you need something that weighs less than Komodo.

UPDATE: I just noticed that you "have been doing just print/Dumper", so you might not be aware about how Apache::DB allows you to run the interactive Perl debugger under mod_perl just like regular perl programs.

trwww