Clojure

Clojure is a dynamic and functional dialect of the Lisp programming language on the Java platform. Like other Lisp dialects, Clojure treats code as data and has a Lisp macro system. The current development process is community-driven, overseen by Rich Hickey as its benevolent dictator for life. Clojure advocates immutability and immutable data structures and encourages programmers to be explicit about managing identity and its states.