Sidebery provides the list of tabs structured in a tree, bookmarks and history within the customizable panels. It aims to be fast and configurable. Notice: Sidebery may conflict with addons that handle position of new tabs (e.g. Tree Style Tabs) or addons that move/sort tabs, which may result in unexpected behavior or broken tabs state at initialization. To avoid potential issues, please, disable such addons in Add-ons Manager page (about:addons). Some of the key features:

- Tabs
- Simple flat list or tree with the option to set tree limit. - Group tabs (aka folders) with a custom name helps organize open pages. - Tabs colorization: Automatic per-domain/URL or manual. - Tabs sorting: by title, url or access time - Automatic unloading of tabs in a folded branch / inactive panel. - Customizable tab title. - ...
- Bookmarks
- Tree or chronological view. - Sort by name, URL or creation time - Basic operations: open in... / create / edit / delete. - Ability to highlight open bookmarks and activate the corresponding tab instead of opening a new one when clicked. - Automatically delete a bookmark on opening from "Other Bookmarks" folder or configured bookmarks panel. - ...
- Tabs / Bookmarks panels
- Organize your browsing with panels of tabs/bookmarks. - Convert open tabs in the panel to bookmarks and vice versa. - Automatically move tabs by URL to configured panel. - ...
- Containers
- Bind container to the tabs panel. - Automatically reopen tab in the target container by URL. - Setup proxy config and UserAgent header for tabs in a container. - ...
- Customizable context menu
Sidebery allows you to change the context menu for tabs and bookmarks. You can enable/disable/move options, create sub-menus/separators.
- Customizable mouse/keyboard controls
- Option to switch tabs with mouse-wheel. - Configurable drag and drop behavior. - A growing list of available actions for mouse/keyboard bindings.
- Customizable styles
Sidebery provides full control of styles for sidebar and group page via variables and custom CSS.
- Snapshots
You can setup auto snapshots that will keep info about open windows and tabs.

Privacy policy

- Sidebery does not engage in ad targeting, data collection, or other activities that could compromise your privacy. - By default, all data is stored locally on your machine. - Sidebery sends data only when synchronization is enabled and only to chosen provider. - You can optionally enable one or more synchronization providers (third-party services) to sync your data across multiple devices. More detailed information can be found on this page: https://github.com/mbnuqw/sidebery/blob/v5/PRIVACY.md

Source code

Source code can be found here: https://github.com/mbnuqw/sidebery

Permissions

- "Access recently closed tabs" - needed for the "Undo close tab" function. - "Access browser tabs" - needed to get info and control tabs. - "Store unlimited amount of client-side data" - needed to store favicons cache and snapshots.

Optional permissions

- "Access your data for all websites" and "Control browser proxy settings"
Required for the next features: - Context menu option for cleaning cookies - Proxy and url rules of containers - Page-screenshots for the group page and windows selection panel - Changing the User-Agent per container
- "Hide and show browser tabs"
Required for the next features: - Hiding tabs on inactive panels - Hiding folded tabs
- "Read and modify bookmarks" - needed for bookmarking the tabs and bookmarks panel functionality. - "Access browsing history" - for history panel functionality. - "Input data to the clipboard" - Context menu option for copying urls of tabs and bookmarks - "Download files and read and modify the browser’s download history" - Auto-export of snapshots. Note: You can deny these permissions at any time on the settings page.

Notes

- Firefox doesn't allow addons to hide the native (horizontal) tab bar. To achieve that, you can use userChrome.css hacks.

Donate to support the development of this project

- Payeer: P1128042154 - Bitcoin (BTC): bc1q2drx3x5pfl0c68urwztvjrwgksg9u3l7mn4g4m - Ethereum (ETH), USDT (ERC20), USDC (ERC20): 0x11667D20AB328194AEEc68F9385CCcf713607929 - Tron (TRX), USDT (TRC20), USDC (TRC20): TJEdp1TnsN7Jfhfi9Db8yXKDK8NEUovCZb - Litecoin (LTC): ltc1qpv4c4kaahdzhcwzj8yyrwlvnfcw2hw5qpxqr62 - Solana (SOL): GdWipUmnhdDa7kqkF3SJm5jTYqp3UsTdbcGCC1xLbVJf - TON: UQAxwOfvZQz1YR4qieiE-J4wHiz3zrMXAyxDiRJQQXIDX8MH

More info you can find here