This add-ons is very useful. Thanks for creating this!

Really nice. It works as a charm!

This extension helps me a lot during my opening of 300+ saved addresses.

I have a suggestion.
It would be useful to set by default "Open each URL after[...]" to 0.5 seconds instead of 0 seconds. It is better because opening many URLs at the same time causes browser to freeze, server to deny access, CPU to run at 100%.