Registered by Avahi

Avahi is a fully LGPL framework for Multicast DNS Service Discovery.
It allows programs to publish and discover services and hosts running on a local network with no specific configuration.
For example you can plug into a network and instantly find printers to print to, files to look at and people to talk to.

Avahi is designed to be compatible with the mDNS/DNS-SD specification and boasts the following features

 * Fully open source and freely available under the LGPL
 * Full IPv4 and IPv6 support
 * An embeddable mDNS stack
 * Dynamic adjustment to network reconfiguration
 * Daemon with DBUS API for desktop applications
 * C library to interface with the DBUS API
 * C# library
 * Compatible with other mDNS/DNS-SD implementations such as Howl and Apple Bonjour (previously Rendezvous)
 * Ability to correctly "reflect" mDNS between two or more LAN segments
 * Ability to configure DNS servers based on mDNS/DNS-SD published information, a feature that is very usefull on IPv6 which has no other mechanism for this.
 * Combined with nss-mdns, allows hostname lookup such as 'laptop.local' without the configuration of a DNS server.
 * Easy integration into GLIB, QT3, QT4 mainloop applications.
 * Documentation and examples of both developer APIs and utilities.

mDNS/DNS-SD is part of a larger set of specifications for easy configuration of networking known as "ZeroConf" (, with the aim of allowing you to plug into a network and instantly be able to interact with it's services.

Avahi was designed to be a fully free implementation, and is available under the LGPL. Many other implementations of the mDNS/DNS-SD specification were previously non-free, restricting their use in many platforms such as the GNOME desktop and many distributions.

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GNU GPL v2, GNU LGPL v2.1, MIT / X / Expat Licence

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