So Jeff Xiong has just anounced the erlstomp project - an Erlang broker that uses the stomp protocol. Stomp is a simple text oriented wire format for messaging - which is really starting to get a lot of traction because of its so easy to implement new clients with.
Existing clients include:
C, C++, C#, Java, Delphi, Flash, Ruby, Smalltalk, Perl, PHP etc.
This brings the number of stomp supporting brokers to 5 (including ActiveMQ)!!