There are several, highly configurable (of course) and usable REPLs. https://metacpan.org/pod/Devel::REPL https://metacpan.org/pod/Devel::REPL https://metacpan

There are several, highly configurable (of course) and usable REPLs. https://metacpan.org/pod/Devel::REPL https://metacpan.org/pod/Devel::REPL https://metacpan.org/pod/Reply https://metacpan.org/pod/Reply Not to mention the Jupyter kernel: https://metacpan.org/dist/Devel-IPerl https://metacpan.org/dist/Devel-IPerl