I'm working on a multisig sign-off solution, with the first use case being file downloads like GitHub releases authentication: https://github.com/asfaload/asfaload

I'm coming from F# and find rust a good compromise: great type safety (though I prefer the F# language) with an even better ecosystem. It can also generate decently sized statically compiled executables, useful for CLI tools, and the library code I wrote should be available to mobile apps (to be developed).