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 Extra Folder Columns by Sacrosanct
Rated 5 out of 5 stars
Thanks for this plugin. As of TB38 this is incorporated into main functionality again, which was missing since TB2. It took many years to do that.
To create your own collections, you must have a Mozilla Add-ons account.