Erlang
Used in combination with RabbitMQ, MochiWeb, and custom websocket/long-polling/HTTP1.1-streaming API to create a real-time web API to be used with AJAX, supporting HTTP and HTTPS simultaneously.
Custom RabbitMQ modification to route messages/events on geographic proximity.
WebSockets
Server-side push and keepalive for mobile-based client network monitoring and communication, Erlang-based
MQTT
Server-side push and keepalive for mobile-based client network monitoring and communication, Erlang-based