Are you still using the old osc-bonjour? there's now the more flexible zeroconf.browse, zeroconf.resolve and zeroconf.register externals that let's you browse, resolve and register any kind of zeroconf services.

http://sourceforge.net/projects/osctools/files/

They are much more integrated with Max5 than osc-bonjour was, using attributes... etc

Thanks to Charles Bascou from GMEM there's an update to the oscbonjour maxmsp externals for UniversalBinary.

see the old article for the download location

beware this is just a draft

here is a max/msp external for OSX (UniversalBinary) and windows doing Bonjour/ZeroConf service discovery and announcement:

basically there are only 3 messages:
browse: browse for available services of type _osc._udp
resolve name: get hostname and port number from service name
register name port: register and a service of type _osc._udp with specificied name and UDP port number

here is the download link:
oscbonjour.zip

and the old one
oscbonjour_ppc_win.zip

for the windows version you'll need to install Bonjour for windows:
http://www.apple.com/fr/macosx/features/bonjour/

SourceCode

the sourcecode is available on sourceforge under a BSD license, you'll need 2 modules: oscbonjour and zeroconf, here are the commands you need to run:

svn co https://svn.sourceforge.net/svnroot/osctools/trunk/oscbonjour oscbonjour

svn co https://svn.sourceforge.net/svnroot/osctools/trunk/zeroconf zeroconf

Update

osc-bonjour for Max/MSP is no longer maintained, please use the more general zeroconf.browse, zeroconf.resolve and zeroconf.register externals instead.
They are much simpler and powerful and let you work with any kind of zeronf services, not just _osc._udp.

http://sourceforge.net/projects/osctools/files/

We had a very interresting meeting with about 20 OSC developpers on thurday June 8th 2006 about the future of OSC standardization.

the meeting was lead by Matt Wright(CNMAT) with participation from David Wessel(CNMAT), Ali Momeni(CNMAT?), Emmanuel Flety(IRCAM), Seb Beaulieu (Plogue), me(IRCAM) the JazzMutant's team and many others whose names I don't remember.

Matt has put online an overview of the hot topics of the meeting:
http://www.opensoundcontrol.org/group_book/developers/nime06meeting

the highlights are on the usage of ZeroConf/Bonjour/Rendez-Vous for service discovery and registration,
OSC namespace discovery

It solves the known bug of using otupd with max scheduler in audio-interupt. And better integrates with MaxMSP threading.

more infos...

I've made a small utility that can change the address part of an OSC message and send it to another destination.
It's particuarly useful when you have 2 applications with different OSC-namespaces that you want to interconnect.

more infos...