Smalltalk
Smalltalk is a dynamically-typed, object-oriented programming language known for its simplicity and minimalist syntax. It is primarily used for teaching, research, and creating graphical user interfaces.
Hello, world code example:
Transcript show: 'Hello world!'; cr.
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 11,087