Rated 2 out of 5 stars

I have been happy with Lightning, but I am about to uninstall it adn Provider because it cannot be synchronized with GoogleCalendar. Provider does NOT provide synchronization. Changes made in your off-line calendar do NOT appear on GoogleCal and the "synchronized" calendar cannot be viewed off-line in Lightning. Not good enough for my purposes.

This review is for a previous version of the add-on (0.13).