Tree Style Tab

Name: Tree Style Tab
Rating: 4.5215 (2259 reviews)
Author: Piro (piro_or)

By: Piro (piro_or)

Show tabs like a tree.

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Features & Capabilities

Tree Style Tab is a powerful browser extension that organizes your tabs as hierarchical trees. New tabs opened from a current tab are automatically grouped as children, enabling clear visual branching and a tidy tab bar. Easily collapse or expand branches to manage tab clutter, and rearrange tabs via drag and drop to suit your workflow.

This extension acts like a visual browsing history and groups related topics, enhancing navigation especially during research or multi-tab browsing. Useful features include toggling the sidebar with the F1 key, bookmarking integration, session management, and APIs for extension developers. Tree Style Tab supports various helper add-ons to extend functionality, making it a versatile tool for improving productivity and browser tab management.

User Growth & Download Statistics

Add-on Developer Tools

By:

Daily users:

Rating:

Version:

4.3.4 Last updated: 2026-04-29

Version code:

6237023

Creation date:

2007-10-20

Risk:

Permissions:

activeTab
contextualIdentities
cookies
menus
menus.overrideContext
notifications
search
sessions
storage
tabGroups

Size:

1.18MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 120 ▼ 2

Other rankings

#3 in Tabs

#8 in Appearance

#1 in style keyword 32

#2 in like keyword 40

#2 in tab keyword 70

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For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Piro (piro_or)

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/tree-style-tab/

Website:

https://github.com/piroor/treestyletab/issues

Permission Change History

2025-06-06: Version 4.1.11 → 4.2.0

Add Permissions: tabGroups

2024-03-18: Version 4.0.3 → 4.0.8

Add Optional permissions: clipboardRead

User Reviews

Users consistently praise Tree Style Tab for strong tab organization via tree-style nesting and branches, which makes managing large tab sets visually clear and easy to navigate. Many reviewers report a notable productivity boost in work and search tasks and describe the extension as essential for Firefox, with several users noting they wouldn’t use Firefox without it and that they install it first on new machines. Long-time users highlight reliability and ongoing value, depending on a mature feature set that keeps tabs neatly grouped and accessible.

Pros

Excellent tab organization with automatic nesting/branching, making it easy to manage many tabs.
Significant productivity boost: users report working and searching much more efficiently.
Essential add-on for Firefox users; many say it’s the reason they stay with Firefox.
Long-term reliability and trust; users install it first on new machines and have used it for years.

Cons

Recent reviews

by Ce*****, 2026-06-11

by Za*****, 2026-06-04

by Lu*****, 2026-05-28

View all user reviews ›

Is Tree Style Tab Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Tree Style Tab requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Tree Style Tab has earned a good reputation and can be trusted.

Risk likelihood analysis details

Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
Good **** ********* ** ****** ** ********
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