Which underappreciated programming language deserves more recognition?

I often notice that the spotlight remains on popular choices like Python and JavaScript while other languages go unnoticed.

I am curious to learn about a programming language you consider a hidden gem that has not received its fair acknowledgment. Please elaborate on what makes this language special, describing its distinctive features, possible applications, and why it holds charm for developers despite being less mainstream. Your insights could help others discover its potential advantages.

hey, i’ve been playing with ocaml - its pure func style and type system r awesomely neat. its not mainstream but def has that quirky elegance for compilers and such. give it a try if u feel adventurous, might just surprise u!

hey, been tinkering with rust lately - its memory model is lik a magic trick. sure, its not mainstream but its robustness gets me every time. any one else been exploring its quirkies? what sort of apps are u thinking of buildin?