On Wed, May 26, 2010 at 5:07 AM, sync <jiannma at gmail.com> wrote: > Hello,guys: > > I've seen several suggestions for alternatives to exchange for mail, > which I will be trying. > > My question is, does anyone know of any good open source shared calendar > systems? I know its not open source, but have you considered Google Apps for Domains? You can get your own gmail/calendar/docs/sites/chat on your own domain.com address for up to 50 people for free. As well as groups/contact sharing/calendar sharing, etc. I originally tried it out just for testing, but I find it much easier/faster than my managing my own hosting. -- Mauriat Miranda http://www.mjmwired.net/linux