Basho, Klarna, Cloudant (now IBM), WhatsApp, T-Mobile for some SMS stuff, many others.
You also use Erlang without even knowing ;-) Chances are every time your access the Internet via your smart phone, there is Erlang code managing that. RabbitMQ broker is written in Erlang.
You also use Erlang without even knowing ;-) Chances are every time your access the Internet via your smart phone, there is Erlang code managing that. RabbitMQ broker is written in Erlang.