The Tiobe Index of Programming Language Popularity has some new names in the top 50 this month. Facebook's Hack, an alternative to PHP, came in a 47th, breaking into the top 50 for the first time. "The big question is of course: can Hack replace PHP in the future? Deployability is still quite hard (e.g. because it is not available on hosted web servers by default), otherwise it could certainly become PHP's successor," said Tiobe. Also new to the list: ActionScript ranked 44th, and Clojure squeezed in at 49th.