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All-in-One Sidebar

  • Firefox 49 - 56.*

438 KB, released 08/16/2017

All-in-One Sidebar on Firefox Add-ons at Please remember to rate it! :-)


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Softpedia Award



All-in-One Sidebar - a sidebar extension for Mozilla Firefox!


The development of this extension has been discontinued. The All-in-One Sidebar will stop working in November 2017 with the release of Firefox 57. Please read my statement.

All-in-One Sidebar (AiOS) is a sidebar control, inspired by Opera's. Click on the left edge of your browser window to open the sidebar and get easy access to all your panels. It lets you quickly switch between sidebar panels, view dialog windows such as downloads, add-ons, and more in the sidebar, or view websites in the sidebar. It includes a slide-out button and a toolbar, all of which can be extensively customized. All-In-One Sidebar provides also enhancements for many built-in and extension features and some extra features.

AiOS screenshotYou can set the orientation to left or right, set the minimum, default and maximum width and the behavior on browser startup.

All-in-One Sidebar provides enhancements for many built-in features, which are related to the sidebar.

The options dialog gives you the ability to configure many features, behaviors and the appearance of All-in-One Sidebar.

Enjoy a clear browser window, more toolbar space and much more...


What it is and what it should remain

The intention of AiOS is to improve and enhance the sidebar handling and the related built-in features of Firefox itself. Not more and not less.

What it is not and what it should not become

AiOS is not an extension for a lot of new sidebar panels like tab lists, notes, rss reader, instant messenger, social bookmark services, browsing sessions and so more...


Please see this list for all features... and the screenshots.

Keyboard shortcuts (default settings)

All keyboard shortcuts are fully configurable. So it would be possible to prevent collisions with other extensions. Open the options dialog to configure the shortcuts, click the button "Shortcuts" and change them to your needs.

Tip: The extension keyconfig allows you to configure all shortcuts in Firefox.

Following list shows you the default shortcut settings for english and german language. Please note that they can vary depending upon language (the translators of this extension specifies the default settings). The actually settings can be seen in the options dialog, if you click the button"Shortcuts".

Supported Languages

If you would like to translate All-in-One Sidebar to your language and join the list of translators, please visit, register as translator, go to the All-in-One Sidebar project and register yourself as an AiOS translator for your language.

Hidden settings

All-in-One Sidebar includes a few hidden settings.

Project Info

Latest Version:
License: GNU General Public License, Version 2.0
Supported Browser: Mozilla Firefox 49 - 56.*
Author: Ingo Wennemaring
Special thanks to: contributors, translators, testers and supporters - you know who you are.