Guile is the 'official extension language' for GNU projects; i.e. for embedding into C programs, for scripting, macros, writing plugins, etc. This gives it a bo

Guile is the 'official extension language' for GNU projects; i.e. for embedding into C programs, for scripting, macros, writing plugins, etc. This gives it a boost in popularity (similar to how JS got a boost from being the 'official extension language' of the Web; although on a massively different scale!) Looking at https://en.wikipedia.org/wiki/Common_Lisp#Applications https://en.wikipedia.org/wiki/Common_Lisp#Applications I've personally used StumpWM and ACL2; and Cyc is a rather prominent project. One notable application that's written in Racket is Hacker News! (It's written in 'Arc', which is implemented using Racket).