SkyDNS is a distributed service for announcement and discovery of services built on top of etcd. It utilizes DNS queries to discover available services. This is done by leveraging SRV records in DNS, with special meaning given to subdomains, priorities and weights.

Emerald is a window decorator for the Compiz window manager, using a custom theme format (*.emerald). It is highly customizable and supports different theme engines, with transparency and precise placement of borders and window title elements.