> anything even remotely close to mainstream: Node, Rails, Grails, Django, Flask/Pyramid/Pylons/Whatever-it's-called-now, Scala+Play, Java+Spring MVC, Whatever-

> anything even remotely close to mainstream: Node, Rails, Grails, Django, Flask/Pyramid/Pylons/Whatever-it's-called-now, Scala+Play, Java+Spring MVC, Whatever-Clojure-uses, etc The etc covers Go based servers nowadays. PHP backends are still fairly common, and maybe even Perl 5 is still used.