Rated 5 out of 5 stars
I've been searching for an easy way to sync contacts and calendars for many years, everything was either buggy, expensive or "too online" in the sense of not respecting privacy. With this tool (but use the current 1.0.3!!) and "lightning" you get a solid, simple and elegant solution which needs only an imap email account (it does NOT require kolab!). Works very nicely for me on ubuntu jaunty, but I had to use the newer version 1.0.3 from the author's site.
The only drawback is that it's a bit slow, but I think comfortable enough. What is missing in my opinion is an option to automatically sync when launching / shutting down thunderbird.
This is good work, thanks a lot to the author, keep it going!