Guile

GNU Ubiquitous Intelligent Language for Extensions[3] (GNU Guile) is the preferred extension language system for the GNU Project[4] and features an implementation of the programming language Scheme. Its first version was released in 1993.[1] In addition to large parts of Scheme standards, Guile Scheme includes modularized extensions for many different programming tasks. https://en.wikipedia.org/wiki/GNU_Guile