Review for Extra Folder Columns by tylerash
Rated 5 out of 5 stars
Using 1.1.1 with TB 3.1.7
Works well, great addition to TB -- should be in by default.
Recommend adding column for showing "Tags", able to select which tags to display
Easier than creating a filter and updating when you have many accounts and folders and new ones are always created
To create your own collections, you must have a Mozilla Add-ons account.