Hi, sorry for my delay in responding and continuing a slightly-OT thread, but I just joined this list today. Jeff, have you looked at Meeting Maker? It fits the bill almost exactly as you described. I used it several years ago (it has been around for over 10 years - well before Exchange) in a large environment, and integrates nicely with LDAP: http://www.MeetingMaker.com/products/meetingmaker/Modules/ldap.cfm I would love to see Red Hat eventually further develop and support the Calendar Server, but in the meantime, Meeting Maker is an excellent and well-supported product that does not require Exchange. Alan On 6/14/2005 2:42 PM, jclowser at unitedmessaging.com wrote: > Hehe - I know it's a bit of a bastard child, but what options are > there other than Exchange? > > Apache/webdav > Local personal calendars (outlook, sunbird, etc) > OpenExchange > A number of open source webcals > A bunch of proprietary cal servers > > I know this is completely off topic for the FDS list, but I don't know > of any good server based ldap integrated calendar solutions out there > that allow fat clients, free/busy lookup, etc that compares to > Exchange, and that often makes it really hard to convince people to > accept a mail solution that is not Exchange, which in turn leads to AD > as a directory service (my round about way to make it "on topic" :) )... > > - Jeff