Geertjan from NetBeans took three interviews with language programmers for NetBeans, one of them is me, where I talked about ErlyBird - Erlang Editor for NetBeans and AIOTrade (formly HumaiTrader) which are all based on NetBeans Platform.
About AIOTrade, in the interview, I said:
"I'm going to split AIOTrade into a client/server application. The server-side will act as a streaming quote data feed server and be responsible for delivering transaction orders to brokers in soft real-time, written in Erlang. The client-side charting and UI features will remain in Java, where Java is strong. With the Jinterface APIs provided by Erlang, Java is easily able to talk with the Erlang server."