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 Der_Orso
Rated 5 out of 5 stars
After many years of enjoying this Add-On Mozilla has finally decided to include it--or at least the exact same functionality--into the heart of TB 38.x.
Many thanks to Joey Minta and Standard8 for the years of enjoyment!
To create your own collections, you must have a Mozilla Add-ons account.