@ -236,6 +236,7 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
## Queuing
* [BeanstalkD](http://kr.github.io/beanstalkd/) - A simple, fast work queue.
* [RabbitMQ](http://www.rabbitmq.com/) - Robust, fully featured, cross distro queuing system.
* [ZeroMQ](http://zeromq.org/) - Lightweight queuing system.