Erlang
Used by 3 peopleerlang.org ↗
“I also just have to mention erlang, which makes running a server like Carcassonne's feasible for a small shop like ours.”
Martin Pittenauer Interview, Co-founder (TheCodingMonkeys) · via Uses This 
“Best known for my work on Erlang.”
Joe Armstrong Interview, Software developer (Erlang) · via Uses This
