There is something called perldebug: http://perldoc.perl.org/perldebug.html
it is not an IDE. But you can step through perl code, and check the value of certain variables, etc.
Maybe there is one, but I'm not aware of. For `old-fashioned' command line debugging the built-in perl debugger is good enough. See here for basic hints, read `man perldebug' for advanced stuff.Thank you for the confirmation.
Is there a perl IDE like MS Visual Studio for C++? You can follow into the functions, see the value of variables.