Net::Bonjour is a set of modules that allow one to discover local services
via multicast DNS (mDNS) or enterprise services via traditional DNS. This
method of service discovery has been branded as Bonjour by Apple Computer.

More information can be found at:

http://www.zeroconf.org/
http://developer.apple.com/macosx/rendezvous/index.html

A list of register service types can be found at:

http://www.dns-sd.org/ServiceTypes.html