[andruby]

Elixir is getting increasingly popular as a server-side language with Phoenix. It has great concurrency, futures (Tasks [0]), smp and a fast http server (cowboy [1]).

[0] http://elixir-lang.org/docs/v1.1/elixir/Task.html

[1] https://github.com/ninenines/cowboy

[zeckalpha]

But limited static analysis.