![Tab Manager のプレビュー](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
Tab Manager 作成者: beep boop boop bop
実験的実験的
Adds a counter that shows you how many tabs you have open, and lets you set a maximum number of tabs you're allowed to open. Clicking the counter opens a page that lets you select tabs to close them, bookmark them, move them, and more.
この拡張機能を使用するには Firefox が必要です