Julia
Julia is a high-level, high-performance programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It is used for data analysis and visualization, numerical and scientific computing, machine learning, and more.
Hello, world code example:
println("Hello world!")
Popularity: 1.16% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 64,202