> Similarities to CGI make relearning easy

Actually, that's FastCGI's forte too.

The only difference between a sanely written CGI and FastCGI program is the require and a while loop. CGI::Fast can even run as a normal CGI if needed. I ported Wakaba's captcha.pl from CGI to FastCGI with about five minutes of effort.

I don't know about the last two, but I prefer FastCGI over mod_perl. mod_perl is good if you need to dig into the guts of Apache, but most apps don't need that power.

Recently I've been playing with Mojo. I think it's nice.