MozRepl, which I use to remotely control Firefox, is officially broken as of FF55 and the devs say it won't be fixed and can't really work in the future anyhow as FF ditches XPCOM. That means I can't use WWW::Mechanize::Firefox anymore (as demo'd (demoed? demod?...) in a MUUG meeting a couple of years back). (https://github.com/bard/mozrepl/issues/68#issuecomment-322212759)

So I'm left looking for alternatives... Anyone else know of / is using any good progrmamatic browser remote-controllers? Hopefully they'd support FF and Perl, but I could convert/find workarounds if it supported different browser/languages.

Also, beyond that, are there any good libraries /modules for interacting with web pages "headless", that is, having the dom and js handled all in memory without any actual browser or window showing?

I'd love to hear about personal experience / anecdotes, but just rattling off some names to research would be helpful too. Thanks!