Hacker News Reader

> Does Ruby have a cool interpreter? Perl? R?

For Perl I use Devel::REPL (https://metacpan.org/module/Devel::REPL) but there are several others on CPAN (for eg: https://metacpan.org/module/Zoidberg) with varying levels of coolness.

for R, you're a fool (IMO) if you use anything but Emacs with Emacs Speaks Statistics.

Even as an emacs die-hard (very), I have not found yet a reason to move from the bundled editor for Mac that comes with R

RStudio is a pretty cool IDE for R.