Scheme Paradigms Multi-paradigm (functional procedural meta) Designed by Guy L. Steele Gerald Jay Sussman First appeared 1970 (1970) Stable release R7RS (ratified standard) / 2013 (2013) Typing discipline Strong Dynamic Scope lexical Filename extensions .scm .ss Website www.scheme-reports.org Major implementations Many (see Category:Scheme (programming language) implementations) Dialects T Influenced by Lisp ALGOL MDL Influenced Clojure Common Lisp Dylan EuLisp Haskell Hop JavaScript Julia Lua R S Racket Ruby Rust Scala Scheme at Wikibooks