Alternatives to Tabs Outliner for all platforms with any license

OneTab

Save up to 95% memory and reduce tab clutter in Google Chrome and Mozilla Firefox.

Free Mac Windows Linux Chrome Firefox
Google Chrome Extensions Colored Tabs Colored Text Firefox Extensions ... Keep tabs on all accounts in one view Add a feature

52 Like
Tree Style Tab

This provides tree-style tab bar, like a folder tree of File Explorer . New tabs opened from links (or etc.) are automatically...
- 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. Guest • Jun 2015 • 4 agrees and 0 disagrees
Free Mac Windows Linux Firefox
Firefox Extensions Tabbed browsing Tree view Add a feature

51 Like
Session Buddy

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...

Free Web Chrome OS Chrome
Google Chrome Extensions Safari extension Add a feature

28 Like
Tab Mix Plus

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed...

Free Open Source Mac Windows Linux Pale Moon Firefox
Built-in e-Book converter Close right/left tabs Colored Tabs Crash recovery ... Firefox Extensions Right-click tab menu Undo close tab list Add a feature

34 Like
Sidewise Tree Style Tabs

A dockable sidebar for Chrome featuring vertical Tree Style Tabs, Tab Hibernation, and much more. * Tree Style Tabs: organize your tabs in a tree view. Supports...

Free Mac Windows Linux Chrome
Tabbed browsing Tree-style Add a feature

15 Like
Tabli

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. Tabli runs...

Free Open Source Mac Windows Linux Chrome
Treat windows as primary session holders Add a feature

7 Like
Session Box

Using websites with multiple accounts at the same time is made easy. Create an independent tab with a click of a button.

Freemium Mac Windows Linux Chrome Firefox
Session sharing Anonymity Multiple login on one browser Session management Add a feature

8 Like
OneTab Pro

Too many tabs? Take control of your browser tabs. OneTab Pro is a simple 1-click tab manager that also saves you up to 95% memory! Browser the web smoothly by...

Free Web Chrome OS Chrome Firefox
Google Chrome Extensions Session management Tabbed browsing Add a feature

4 Like
TabsFolders

TabsFolders is a session and bookmark manager. It allows you to save all your tabs with one click. Organize into sub-folders. Easily share your hundreds of links with...

Freemium Mac Windows Linux Web
Google Chrome Extensions Crash recovery Firefox Extensions Safari extension ... Tabbed browsing Add a feature

3 Like
Open Tabs Next to Current

Always open new tabs to the right of the current one(which is not the same as setting browser.tabs.insertRelatedAfterCurrent to true). You can however get the default...

Free Mac Windows Linux Firefox
Firefox Extensions Add a feature

3 Like
Tab Groups

Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch...
- Discontinued The extension is no longer updated and it doesn't work on Firefox 57. It still works on XUL-based Firefox forks like https://alternativeto.net/software/waterfox/
Free Open Source Mac Windows Linux Waterfox Firefox
Customizable Firefox Extensions Group tabs Support for Keyboard Shortcuts ... Legacy Firefox Addon Tabbed browsing Add a feature

2 Like
Simple Tab Groups

Create, modify and quick change tab groups. Features: - Full rewrite addon without any third-party libraries - New Design (fork old addon design...

Free Open Source Mac Windows Linux Firefox
Colored Tabs Firefox Extensions Group tabs Integrated Search ... Support for Keyboard Shortcuts Multi-windows Add a feature

2 Like
Tabsets

Google Chrome extension to keep all the tabs you have open in a set so that you can open them all again later, even on another device.

Free Open Source Mac Windows Linux Chrome
Google Chrome Extensions Tabbed browsing Add a feature

5 Like
MySessions

MySessions is a simple session manager. You can quickly save your current browser state and reload it whenever necessary. Features: - Multilanguage interface: ru...

Free Mac Windows Linux Firefox
Crash recovery Firefox Extensions Multiple languages Add a feature

2 Like
Duplicate Tabs Closer

Detects and automatically closes duplicate tabs.

Free Open Source Self-Hosted Firefox
Firefox Extensions Tabbed browsing Add a feature

2 Like