Erlang Programming Language.
Haskell. The Haskell Programming Language Haskell is an advanced purely-functional programming language.
An open-source product of more than twenty years of cutting-edge research, it allows rapid development of robust, concise, correct software. The Perl Programming Language - www.perl.org. Python Programming Language – Official Website. The Go Programming Language. GNU Smalltalk | The Smalltalk for those who can type. Overview (Java 2 Platform SE v1.4.2)