Оцінка 5 з 5 зірок

від pakronenberg за Лис. 22, 2017 · постійне посилання

This is the extension I miss the most on Firefox 57. The only one I've found that even attempts it is https://addons.mozilla.org/en-US/firefox/addon/otherwindow/, but it is a poor substitute. Anyone find any thing else that works as good as Window Master?