It works as advertised and it's open-source. What do you want more?

なぜかわざわざ別窓で再生しだすDアニメに、イライラしてました
一つに統合でき、ものすごく快適になって感動しました

Brilliant!

Will there be a toolbar icon in a future release?

Can't do without it.

Simple, fast, provides exactly the functionality needed, and so easy: just right-click to get the tab context menu and click on the Merge all windows option. Thank you!

No right click button button or anything to merge windows.

Excellent!
It simply works!
And is fast! :-D

Really not too much intuitive for first-time use.
A more clear one-line instruction about the 'right-click' way would be useful.

Absolutely amazing idea, I love it!

Simple and work as aspect.

Simple and easy to use. Merge to focused window.

Very useful addon, thank you! Have you considered making a version or implementing a setting that would always merge all windows automatically should they be opened? That the only thing this addon's missing to be perfect.

Nice addon. Does what it says

super useful feature

Simple and easy to use.