B
B is a general-purpose language developed at Bell Labs in the 1960s as a predecessor to the C programming language. It was designed for systems programming and has been widely used for applications ranging from operating systems to compilers.
Hello, world code example:
main()
{
putstr("Hello world!*n");
return(0);
}
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.