Messaging

JMS / DDS

 * http://icorsaro.net/blog/2011/01/31/12-ddsetjms.html

RTM

 * http://jobs.github.com/companies/Remember%20The%20Milk
 * http://jobs.github.com/positions/8c628512-1d3e-11e0-83d9-99a190b4faaa

Protocols

 * http://www.amqp.org/
 * http://xmpp.org/