Neko

Neko is a high-level dynamically-typed programming language developed by Nicolas Cannesse with the file extension '.neko'. It has a compiler, which compiles to a '.n' bytecode file, and a virtual machine which executes the bytecode and can also bind the small virtual machine with the bytecode to make a native executable.

The neko target is known for it's speedy compilation but relatively slow speed, which makes it good for debugging - especially because many C++ libraries linked into haxe can compile to neko as well.