How to: Service Discovery
* [Consul](http://www.consul.io/) - Consul is a tool for service discovery, monitoring and configuration.
* [Doozerd](https://github.com/ha/doozerd) - Doozer is a highly-available, completely consistent store for small amounts of extremely important data.
* [ZooKeeper](http://zookeeper.apache.org/) - ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.