Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 0.4.9
Released Jul 2, 2025 - 74.24 KBWorks with firefox 67.0 and later- Fixed active tab not being set correctly after restoring tabs
Source code released under MIT License
Download Firefox and get the extensionYou’ll need Firefox to use this extensionOlder versions
Version 0.4.8
Released Jun 23, 2025 - 74.22 KBWorks with firefox 67.0 and later- Fixed the sidebar sometimes appearing blank on first open
- Reduced occurrence of restored tabs appearing in incorrect order
- Ensure descendant appears after parent when opening a new tab
Source code released under MIT License
Version 0.4.7
Released May 6, 2024 - 73.7 KBWorks with firefox 67.0 and later- Fixed issue preventing a blank tab to be reopened in a new containerSource code released under MIT License
Version 0.4.6
Released Aug 19, 2023 - 73.65 KBWorks with firefox 67.0 and later- Improved tab restore performance
- Improved sidebar initialization performanceSource code released under MIT License
Version 0.4.5
Released Apr 9, 2023 - 73.68 KBWorks with firefox 67.0 and later- Improved performance in private windows
- Fixed an issue with the sidebar being blank at startup in private windows
- Fixed an issue with parentage not updating correctly in private windows when restoring a tabSource code released under MIT License
Version 0.4.4
Released Apr 7, 2023 - 73.55 KBWorks with firefox 67.0 and later- Fixed an issue with a restored tab's children not being restored
- Improved performance when many tabs are updated concurrentlySource code released under MIT License
Version 0.4.3
Released Dec 23, 2021 - 73.55 KBWorks with firefox 67.0 and later- Fixed horizontal overflow in sidebarSource code released under MIT License
Version 0.4.2
Released Dec 21, 2021 - 73.54 KBWorks with firefox 67.0 and later- Fixed drop indicator when dropping on empty space displaying incorrectly
- Fixed right clicking on empty spaceSource code released under MIT License
Version 0.4.1
Released Dec 3, 2021 - 73.53 KBWorks with firefox 67.0 and later- Fixed mute indicator not responding to clicks
- Added optional button to close tabsSource code released under MIT License
Version 0.4.0
Released Dec 3, 2021 - 72.63 KBWorks with firefox 67.0 and later- Sidebar now works again in private windows
- Updates are batched when a large number of events occurs in a short period of timeSource code released under MIT License
Version 0.3.5
Released Jun 15, 2021 - 73.11 KBWorks with firefox 67.0 and later- Fixed an issue with assigning parent to the last tabSource code released under MIT License
Version 0.3.4
Released Jun 14, 2021 - 73.11 KBWorks with firefox 67.0 and later- Fixed an issue with restoring tabs sometimes breaking the tree structureSource code released under MIT License
Version 0.3.3
Released Jun 12, 2021 - 73.15 KBWorks with firefox 67.0 and later- Tabs now have an audio playing indicator which can be clicked to mute/unmute the tab
- Updated faviconsSource code released under MIT License
Version 0.3.2
Released Jun 5, 2021 - 72.16 KBWorks with firefox 67.0 and later- Dutch translation by Vistaus
- Fix display issue when moving a folded tab with children
- Performance improvementsSource code released under MIT License
Version 0.3.1
Released Dec 9, 2020 - 70.72 KBWorks with firefox 67.0 and later- Changed loading indicator to hourglass
- Added missing favicon for about:addons page
- Performance improvementsSource code released under MIT License
Version 0.3.0
Released Jun 14, 2020 - 67.7 KBWorks with firefox 67.0 and later- Improved performance
- Added a button to clear tree dataSource code released under MIT License
Version 0.2.23
Released Jun 2, 2020 - 67.2 KBWorks with firefox 67.0 and later- Improved performance of folding large treesSource code released under MIT License
Version 0.2.22
Released Jan 1, 2020 - 67.19 KBWorks with firefox 67.0 and later- Improved tree structure retention in response to external addons moving tabsSource code released under MIT License
Version 0.2.21
Released Nov 9, 2019 - 67.04 KBWorks with firefox 67.0 and later- Fix: fold indicator was erroneously displayed on parents unfolded as a result of descendant changesSource code released under MIT License
Version 0.2.20
Released Nov 7, 2019 - 67.02 KBWorks with firefox 67.0 and later- Drop indicator is now displayed correctly for pinned tabs
- Improved performance when many tabs are hidden/displayed simultaneouslySource code released under MIT License
Version 0.2.18
Released Oct 26, 2019 - 66.89 KBWorks with firefox 67.0 and later- Added reopen in container tab context menu
- Added tab attention indicator
- Added additional optionsSource code released under MIT License
Version 0.2.17
Released Oct 22, 2019 - 62.44 KBWorks with firefox 67.0 and later- Fix: tabs could be dragged with control held down (ff 71+)Source code released under MIT License
Version 0.2.16
Released Oct 9, 2019 - 62.18 KBWorks with firefox 67.0 and later- Added a favicon for "Firefox Home" pageSource code released under MIT License
Version 0.2.15
Released Oct 8, 2019 - 59.43 KBWorks with firefox 67.0 and later- Fixed an issue with the addon erroneously changing the active tab following the user closing the active tabSource code released under MIT License
Version 0.2.14
Released Aug 29, 2019 - 59.96 KBWorks with firefox 67.0 and later- Added localization supportSource code released under MIT License