Erlang - KE TECHIES's Language of Expertise, is stunnigly robust and incredibly beautiful functional programming language. It is originated at Ericsson in Sweden, Open sourced in 1998 and has been as choice from then for real-time systems.
Erlang is used in production systems for over 20 years with an uptime percentage of 99.9999999%. Interested about the language, Read more at http://www.erlang.org
Looking for an Ultimate Erlang passionate team?
ejabberd is a Rock Solid, Massively Scalable, Infinitely Extensible XMPP Server written in Erlang.
RabbitMQ is open source message broker that implements Advanced Message Queuing Protocol
Elixir is a dynamic, functional language designed for building scalable and maintainable applications