Avahi is a Free Software implementation of Zeroconf stack. It implements Automatic IPv4LL address allocation, Multicast DNS (mDNS) and DNS based service discovery (DNS-SD) specifications for Zeroconf (aka Bonjour in Apple MacOS X) Networking.

This project aims to integrate Link-Local Multicast Name Resolution (LLMNR) protocol in Avahi, which would result in Avahi being able to take part in both Apple-style and Microsoft-style Zeroconf networking.