F# is a mature, open source, cross-platform, functional-first programming language. Developed by MS
License: Open Source
F# is a functional-first programming language that runs on the .NET framework, offering strong typing and pattern matching, making it suitable for complex data manipulation. Nim, on the other hand, is a statically typed compiled language that emphasizes performance and simplicity, making it suitable for systems programming and applications that require low-level access.