I just wanted to let you know that our friends over at Scalable OpenGroupware.org (SOGo) pushed out their 1.0 release yesterday.
SOGo is a free scalable groupware server. It offers shared calendars, address books and emails through your favorite Web browser or by using a native client such as our Mozilla Thunderbird with Lightning. SOGo is standard-compliant and supports CalDAV, CardDAV, GroupDAV and reuses existing IMAP, SMTP and database servers.
The SOGo developers are good friends of ours and have helped us with developing Lightning today and in the past. So give their software a try! I’m sure they will appreciate it.