Janet Language is described as 'Janet is a functional and imperative programming language. It runs on Windows, Linux, macOS, and should run on other systems with some porting. The entire language (core library, interpreter, compiler, assembler) is about 200-300 kB and should run on many constrained systems' and is a programming language in the development category. There are seven alternatives to Janet Language for a variety of platforms, including Mac, Windows, Linux, BSD and Haiku apps. The best Janet Language alternative is Python, which is both free and Open Source. Other great apps like Janet Language are Lua, Go (Programming Language), Ruby and Luau.