Review for Provider for Google Calendar by Lee
Rated 1 out of 5 stars
I've been using Provider and Lightning for a while, but now my calendar is locked to READ ONLY despite deselecting it every time it changes itself. Updating the Google calendar from the Google account does not sync locally.
I didn't get asked for my Google username and password as suggested in teh instructions.
To create your own collections, you must have a Mozilla Add-ons account.