Squirrel (programming language) - Squirrel is a high level imperative, object-oriented programming language, designed to be a light-weight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.
Steel Bank Common Lisp - Steel Bank Common Lisp (SBCL) is a high performance Common Lisp compiler.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
LIPS Scheme - Scheme based powerful lisp interpreter written in JavaScript
Rust - A safe, concurrent, practical language
Lua - Powerful, fast, lightweight, embeddable scripting language