I'd love to say Leaf, but not quite yet. So I can just say "everything else" -- I'm kind of a generalist, or rather a multi-honed specialist. :)

How to distill the essence of life and produce a magically beautiful programming language.

http://leaflang.org/
http://fusetools.com/

I'm always open for discussions about programming languages and presentations about any of my experience. If you're looking for a mentor them I'm available on codementor: https://www.codementor.io/edaqa