Tabs Outliner is not available for Firefox but there are plenty of alternatives with similar functionality. The best Firefox alternative is OneTab, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to Tabs Outliner and many of them are available for Firefox so hopefully you can find a suitable replacement. Other interesting Firefox alternatives to Tabs Outliner are Tree Style Tab (Free, Open Source), Tab Session Manager (Free, Open Source), Sidebery (Free, Open Source) and Tab Mix Plus (Free, Open Source).
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.
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OneTab vs Tabs Outliner opinions
Most users think OneTab is a great alternative to Tabs Outliner.
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.
This provides tree-style tab bar, like a folder tree of File Explorer . New tabs opened from links (or etc.) are automatically attached to the parent tab.
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Tree Style Tab vs Tabs Outliner opinions
Most users think Tree Style Tab is a great 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.
Positive comment • over 6 years ago
Best way to keep different brain search threads in front of your eyes
Features Vertical layout Bookmarks operations Contextual Identities management Synchronizing containers Different proxy settings for each containers Creating tabs snapshots for easy recovering Light and dark themes Configurable...
Sync Tab Groups is an easy way to manage all your tabs. You organize them depending on a topic by group. Groups can be closed and reopened without caring about your session. You can easily search, active, move, save and remove your groups and tabs.