[masak]

If I may be so bold as to recommend my in-progress Bel implementation: https://github.com/masak/bel

Caveat: I'm still working towards being able to recommend Bel _unconditionally_, not just for small programs. Right now you'll experience unreasonable slowness, terse/uninformative error messages, and missing documentation -- probably in that order. All of those are being addressed. But already today, it's fun to play with.