ZeroConf

Zeroconf is a Working Group of the IETF.

http://www.zeroconf.org/

HeathJohns article compares it to MsWindows Universal Plug N Play (SOAP-based, patent-restricted).

Linux[[OS]] http://zeroconf.sourceforge.net/ |project Apple RendezVous page - The Mac OS X mDNS Responder source code is available for download from the Darwin CVS repository. This package includes platform specific code for MacOs X, Linux[[OS]] and MsWindows, and also includes helper applications for browsing and advertising services. (it's Open Source)

• since renamed BonJour

Howl is an Open Source Cross Platform library.