


Sidebery is the most popular Open Source & free alternative to Tabs Outliner.
- Sidebery is Free and Open Source
- Sidebery is Privacy focused
Tabs Outliner is described as 'Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works' and is a popular Tab Manager in the office & productivity category. There are more than 50 alternatives to Tabs Outliner for a variety of platforms, including Mac, Windows, Mozilla Firefox, Google Chrome and Linux apps. The best Tabs Outliner alternative is Sidebery, which is both free and Open Source. Other great apps like Tabs Outliner are OneTab, Tree Style Tab, Session Buddy and Tab Session Manager.



Sidebery is the most popular Open Source & free alternative to Tabs Outliner.
Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.




Most users think OneTab is a great Tabs Outliner alternative.
OneTab is the most popular Windows, Mac & Linux alternative to Tabs Outliner.




Tabs Outliner does two things: 1) It can act as a session manager; and 2) It provides a more readable, visual UI for sorting & organizing tabs (e.g. indenting/grouping)..... The "Tree Style Tabs" firefox add-on, AFAIK, provides only the second feature.... I have yet to see ANY add-on that does both 1) and 2). Therefore, I do consider "Tree Style Tabs" to be an alternative to Tab Outliner -- depending on what feature-set one is wanting.
Best way to keep different brain search threads in front of your eyes

Most users think Tree Style Tab is a great Tabs Outliner alternative.
Manage Your Browser Sessions View and save the state of all open browser tabs in the current or past browser sessions. Quickly restore your tabs and resume your web surfing after a browser or system crash. Edit the sessions you've saved and restore them into the desired set o.




Session Buddy is the most popular Web-based alternative to Tabs Outliner.
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.



Tab Stash is a no-fuss way to save and organize batches of tabs as bookmarks. Sweep your browser clean with one click of the Tab Stash icon. Your open tabs will be stashed away in your bookmarks, conveniently organized into groups.








A Chrome and Firefox extension enhances tab management by saving and organizing tabs, offering session management, drag-and-drop organization, and a clutter-free experience with easy access to essential tabs using category spaces, effortless search, and link organization.




Enables organizing browser tabs into modular workspaces for project management, meetings, and workflows across Chrome and Firefox, helping reduce clutter, maintain focus, and access all resources or dashboards in one place, supporting seamless collaboration and context switching.

Workona is the most popular Android, iPhone & iPad alternative to Tabs Outliner.
Bookmarks next generation - Tabsets is a browser extension that helps you get your links really organized.


A web browser using Trails for organizing pages, projects, and tasks within a sidebar. Tailored for professionals to save time, boost productivity, and efficiently manage online workflows without traditional tabs or bookmarks.


Horse is the most popular commercial alternative to Tabs Outliner.
Tabli is a tab manager for Google Chrome that provides fast switching between browser windows and tabs and the ability to save and restore windows.




Much easier and free. Have no bugs.


I use it for long time. The extension is not an etalon but good one. I used Tabs Outliner also but some bugs reason turn it off.