Topic: Lisp
Today Vitaly Mayatskikh announced the inclusion of his Common Lisp ZeroMQ bindings into the ZeroMQ 2.0 source tree. ZeroMQ 2.0 is a high-performance messaging system, which is great news if you are trying to build distributed systems in Common Lisp.
Previously, available Free Software alternatives for Common Lisp messaging included CL-XMPP (XMPP client only) and CL-RABBIT (Lispworks only).
Note that ZeroMQ 2.0, unlike version 1, no longer implements AMQP, due to performance reasons.