Here some older discussions I had in my bookmarks

• I like Python's interactive shell a lot better than Perl's debugger. What are my alternatives?
• RFC: IPerl - Interactive Perl ( read-eval-print loop )
• Using Devel::REPL
•  Interactive Perl Interpreter
• using perldebugger as REPL?
• Interactive post-coloring of readline input?

to be extended. ..