Xtend
Xtend is a flexible and expressive programming language that enhances Java with additional features such as lambda expressions, type inference, and extension methods. It is commonly used for developing applications on the Java Virtual Machine (JVM) and is well-suited for projects that require productivity and code readability improvements.
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 1,463