EVERYTHING XIAOMI
Get listed

Sidebery

Sidebery is a free Firefox extension for organizing tabs and bookmarks in a sidebar.

Place
#16 of 27
Score
5.7
Sidebery's website

What Sidebery is

Sidebery is a free Firefox extension for organizing tabs and bookmarks in a sidebar. Its customizable panels can display tabs, bookmarks, and browsing history. Tabs can be arranged as a flat list or tree, grouped under custom names, colored, and sorted. Folded branches and inactive panels can unload tabs automatically. Container tools can bind a container to a tabs panel, reopen tabs in a target container according to URL, and configure proxy and User-Agent settings for container tabs. Users can adjust context menus, mouse and keyboard controls, drag-and-drop behavior, and sidebar and group-page styles with variables or custom CSS. Snapshots can save information about open windows and tabs. Data remains local by default; optional sync uses Firefox Sync or Google Drive, with control over which settings and selected tab data are synchronized. Sidebery also lists tab search, session restore, tab suspension, and workspaces. It is licensed under MIT, and donations are accepted.

Good

  • Panels can show tabs, bookmarks, and history.
  • Tabs support tree layouts, groups, colors, and sorting.
  • Optional sync works with Firefox Sync or Google Drive.
  • Data is stored locally by default.

Watch out

  • Firefox extensions cannot hide the native horizontal tab bar.
  • Some add-ons that move or sort tabs may conflict.
  • Available as a Firefox extension only.

Who it suits

Sidebery suits Firefox users who want to manage tabs, bookmarks, and browsing history in a configurable sidebar. Its container and optional sync features may also suit users who want more control over how tabs are organized and settings are shared.

Verdict

Sidebery offers extensive sidebar organization and customization for Firefox, with local storage by default and optional sync. Note the native tab-bar limitation and potential conflicts with other tab-positioning add-ons.

Plans and prices

From Sidebery's own pricing page, checked 4 Oct 2026.

All about pricing
PlanPriceWhat it gives you
SideberyFreeFirefox extension · donations accepted

The facts

Each one read from Sidebery's own pages, with the date it was checked.

What it does

Compatibility limit
The project warns Sidebery may conflict with add-ons that position, move, or sort tabs, potentially causing unexpected behavior or broken tab state at initialization.checked 4 Oct 2026
Containers
Container features include binding a container to a tabs panel, reopening tabs in a target container by URL, and setting proxy and User-Agent configuration for container tabs.checked 4 Oct 2026
Customization
Users can customize the context menu, mouse and keyboard controls, drag-and-drop behavior, and sidebar and group-page styles with variables and custom CSS.checked 4 Oct 2026
License
The repository identifies the project license as MIT.checked 4 Oct 2026
Native tabs limit
The add-on page says Firefox does not allow extensions to hide the native horizontal tab bar and points users to userChrome.css workarounds.checked 4 Oct 2026
Panels
It provides customizable panels for tabs, bookmarks, and browsing history.checked 4 Oct 2026
Permissions
Required permissions are access to recently closed tabs and browser tabs; additional permissions are optional and support features such as bookmarks, history, proxy settings, and snapshot export.checked 4 Oct 2026
Privacy
The privacy policy says Sidebery does not engage in ad targeting or data collection, stores data locally by default, and sends data only when sync is enabled and only to the selected provider.checked 4 Oct 2026
Purpose
Sidebery is a Firefox extension for managing tabs and bookmarks in a sidebar.checked 4 Oct 2026
Security reporting
The security policy supports the latest version published on addons.mozilla.org and directs vulnerability reports to [email protected].checked 4 Oct 2026
Snapshots
Snapshots can be configured to save information about open windows and tabs.checked 4 Oct 2026
Support
The maker invites users to create a GitHub Discussion or email the developer with questions about the privacy policy; the add-on lists [email protected] as its support email.checked 4 Oct 2026
Sync data
Users can choose which settings, context-menu configuration, keybindings, custom styles, and selected tab data are synchronized.checked 4 Oct 2026
Synchronization
Optional sync providers named in the privacy policy are Firefox Sync and Google Drive.checked 4 Oct 2026
Tab layouts
Tabs can be shown as a flat list or a tree, grouped with custom names, colored, sorted, and automatically unloaded in folded branches or inactive panels.checked 4 Oct 2026

Alternatives to Sidebery

All alternatives
  1. 1Toby logo

    Toby

    Free planAndroidiOSWebExtension
    8.1From $4.50 a month
    Visit
  2. 2Tabblar logo

    Tabblar

    Free planAndroidiOSWebAPI
    8.0From $5 a month
    Visit
  3. 3

    tabExtend

    Free planAndroidiOSWebExtension
    8.0From $8 a month
    Visit
  4. 4

    Workona

    Free planiOSWebExtensionLinux
    7.6From $12 a month
    Visit
  5. 5Pinako logo

    Pinako

    Free planWebLinuxWindows
    6.9From $5 a month
    Visit
  6. 6

    Tabmanager.io

    Free planExtension
    6.4From $35.88 a year
    Visit