Harbour
Harbour is a versatile and extensible programming language that combines the best features of Clipper and xBase languages. It is primarily used for developing business applications that require data management and processing capabilities.
Hello, world code example:
? "Hello world!"
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 54