Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Provider for Google Calendar by Petr-S
Rated 3 out of 5 stars
Still not work in Thunderbird Portable version 91.5.1
:(
To create your own collections, you must have a Mozilla Add-ons account.
