Emulate tabs in sidebar and display tabs vertically. In addition, group tabs and collapse / expand them.

Sidebar Tabs - Vertical Tab Management for Firefox
"Sidebar Tabs" is a Firefox add-on that enables users to display tabs vertically in a sidebar. It offers features like tab grouping, the ability to collapse or expand groups, and customization of tab colors to match your theme. Users can easily manage their tabs by selecting, grouping, and labeling them, enhancing browser organization and efficiency. For further details, visit the provided GitHub repository.
Add-on stats
By: asamuzaK
Weekly download count: 35
Firefox on Android: No
Manifest version: 3
Permissions:
- activeTab
- bookmarks
- contextualIdentities
- cookies
- management
- menus
- menus.overrideContext
- search
- sessions
- storage
Size: 463.16K
URLs: Website ,Privacy policy
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary
Display tabs vertically in the sidebar. Tabs can be grouped.
Browser settings
To match icon colors to your theme, enable the experimental feature as follows:
- Visit about:config.
- Search for svg.context-properties.content.enabled and set the value to true.
Group tabs:
- Select tabs by Shift + click or Ctrl + click.
- Drag one of the selected tabs and Shift + drop it on the tab you want to group.
- Or from the context menu (right click on one of the selected tabs), select "Tab Group" -> "Group Selected Tabs".
- From the context menu, select "Tab Group" -> "Show Group Label" and edit.
- Click on the colored part will toggle collapsed / expanded state.
- Or from the context menu, select "Tab Group" -> "Collapse (Expand) Tab Group".
User reviews
Pros
- Great for heavy tab users, especially with grouping functionality
- Simple design and functionality that meets user expectations
- Looks visually appealing and integrates well with the Firefox ecosystem
- Active development and prompt feedback from the developer on user issues and suggestions
- Similar functionality to vertical tabs found in other browsers like Edge
Cons
- Lacks features for automating tab grouping by domain
- Usability issues such as scrolling behavior when new tabs are created
- Difficulty in managing multiple tabs at once, especially dragging and dropping
- Some features, like keyboard shortcuts and double-click actions, are limited or not functioning as expected
- Occasional problems with saving tab groups after closing and reopening the sidebar
Most mentioned
- Feature suggestions for automatic grouping of tabs by domain
- Usability issues including scrolling problems and drag-and-drop limitations
- Stability problems leading to loss of tab groups upon reopening the sidebar
- Demands for keyboard shortcuts and additional functionality for managing tabs
- Need for customization options like theme adjustments and group naming
User reviews
by HumanistAtypik, 2025-02-09
by murtiuso, 2025-01-12
Love this tab group extension, tried most of the tab managers and this one just works, do have some small improvements I would like to see, but is better than the last 4 I tried, I am a heavy tab user and this sidebar with tab grouping is outstanding.
Not sure how many tabs I have open but would say 300+, and being able to group by setting tab group labels is amazing.
Suggestions for feature, ease of use improvements:
Need to drag and drop multiple selected tabs, when I do it now, only moves one.
Needs move to -> move to a named tab group
Can't drag multiple tabs to a collapsed tab group, but can drag a single tab into an open tab group, should both work
Can't grab and drag a collapsed tab group to a new location, but can open, select all the tabs, and move as a group, and then recreate tab group - cumbersome.
When dragging into a named tab group, will only let you drop behind first tab in the group, not in front of that tab, and won't let you drop it after last tab, though the highlight line shows up as if you could.
by Ceejames, 2024-12-27
Add-on safety
Risk impact
Sidebar Tabs requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Sidebar Tabs. Use it at your own risk.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
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- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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