附加组件
要尝试这里成千上万的附加组件，下载 Mozilla Firefox，一个快速、自由的上网工具！
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![[警告]](https://addons.thunderbird.net/static/img/developers/test-warning.png?b=58a99cbb-667a0970)
权限
关于这个附加组件
[Restartless] [e10s Compatible]
Easily viewable version information in the Add-ons Manager on Firefox/Thunderbird 41.0 - 56.*.
Also restores the add-on version number on Firefox/Thunderbird 41.0 - 56.*.
- Please refer to Bug 1175324
NEW RELEASE
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Tab Counter Icon
Shows number of open tabs as icon.
https://addons.mozilla.org/firefox/addon/tab-counter-icon/
********************************************************************
NOW AVAILABLE
********************************************************************
Version Icon
Shows the browser's version as icon.
https://addons.mozilla.org/addon/version-icon/
********************************************************************
Easily viewable version information in the Add-ons Manager on Firefox/Thunderbird 41.0 - 56.*.
Also restores the add-on version number on Firefox/Thunderbird 41.0 - 56.*.
- Please refer to Bug 1175324
NEW RELEASE
********************************************************************
Tab Counter Icon
Shows number of open tabs as icon.
https://addons.mozilla.org/firefox/addon/tab-counter-icon/
********************************************************************
NOW AVAILABLE
********************************************************************
Version Icon
Shows the browser's version as icon.
https://addons.mozilla.org/addon/version-icon/
********************************************************************
