Very good add-on.
Do exactly what it should done, no more no less ! And it does it very well.
Suggestion: add a way to enter ulrs from existing tab on current window. It should be great.

Thank you, Roy. Your add-on is the best in its category. I've tried two other, they loose. Yours is the easiest to use and it can split URLs into groups.

This addon is very helpful. Specially the sets feature. It would be better if you add a feature which would allow me to assign a custom keyboard to each sets.

nice add ons