F* is described as 'ML-like functional programming language aimed at program verification. F* can express precise specifications for programs, including functional correctness properties. Programs written in F* can be translated to OCaml or F# for execution' and is a programming language in the security & privacy category. There are six alternatives to F* for Mac, Windows, Linux and BSD. The best F* alternative is F# (programming language), which is both free and Open Source. Other great apps like F* are OCaml, Rocq Prover, Isabelle and Agda.