Fortress
Fortress is a high-level programming language designed for scientific and technical computing, offering both performance and productivity for parallel processing. It is primarily used in areas such as computational physics, engineering simulations, and numerical analysis.
Hello, world code example:
export Executable
run() = println("Hello world!")
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.