Review for Provider for Google Calendar by Lauren
Rated 5 out of 5 stars
I love this add on! It syncs all of my google calendars. I've been using it for over a year now with no problems. For the other reviews that ask "why do I need this?", it allows BIDIRECTIONAL access to your google calendars. Otherwise it's just read-access only.
Love it!! ;)
To create your own collections, you must have a Mozilla Add-ons account.