Review for Provider for Google Calendar by quienzabe
Rated 2 out of 5 stars
I can use this extension only for my personal calendar with a limited amount of recurring events. The work calendar uses Google Apps and contains a huge amount of events, mostly are recurring ones (daily standups and weekly reviews, plus the ad-hoc meetings... every day is filled). This extension unfortunately doesn't scale very well and occasionally I get unresponsive script alerts that freeze Thunderbird, preventing me to use email and calendar productively.
Sadly, there isn't anything better on Linux at the moment.
To create your own collections, you must have a Mozilla Add-ons account.