Dylan
Dylan is a multi-paradigm programming language designed for ease of use and enhanced productivity. It is mainly used for developing dynamic, object-oriented applications, particularly in the areas of web development, scripting, and GUI programming.
Hello, world code example:
module: hello-world
format-out("%s\n", "Hello world!");
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 163