Hi all,
It looks like at least a couple of you have played around with my little alpha. Cool!
SpanningSync seems to have gone public with a beta, and I found out about GCalDaemon, which seems like a more robust way of keeping your Google Calendar and your ical files in sync.
GCalDaemon doesn't explicitly support Apple iCal, but it's probably doable. Some motivated hacker could probably take a few lines from jin'sync (the AppleScript and Google WebAuth) and wrap GCalDaemon to make a truly nice solution.
That said, jin'sync is moving on!
Between SpanninSync and GCalDaemon, the Google market seems pretty well covered. (As a warning, if you want to continue using jin'sync, you want to use icalendar-0.97, not the recently released icalendar-0.98.)
What's next? I think future releases of jin'sync will target 30boxes rather than Google Calendar. If you have a MacBook, you probably have some kind of design/UX aesthetic, and appreciate quality over quantity. That said, I myself am moving from Google Calendar to 30boxes, which seems to be a superior product, prettier, easier to use, less annoying, and more open.
I'm a grad student busy with other projects, so no promises yet on when I'll put out another alpha, but I'll start tinkering here and there :)