Cluster - Window & Tab Manager

Name: Cluster - Window & Tab Manager
Rating: 4.434383202099737 (762 reviews)
Author: http://clusterwm.com/

By: http://clusterwm.com/

Window and Tab manager for managing multiple open tabs and windows with simplicity.

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Cluster is a powerful Chrome extension designed to help users efficiently manage multiple open tabs and windows. It offers quick navigation tools, a tab project manager, and the ability to save and restore sessions as projects. The extension minimizes system resource usage by launching restored tabs in a suspended state.

Key features include undoing removed tabs or windows, sorting tabs, displaying real URLs for suspended tabs, drag-and-drop tab management, search and filter capabilities, multi-column widescreen support, and cloud backup of saved sessions. Cluster supports keyboard shortcuts, dark theme, audio indicators, and tab muting, all wrapped in a privacy-focused design that does not share user data. This tool is ideal for users seeking to organize browser sessions and optimize system performance.

Extension Productivity Utilities Developer Tools

By:

http://clusterwm.com/

Users:

30,000

Rating:

4.43

(762) 3 new ratings

Version:

2.2.6 Last updated: 2019-08-04

Creation date:

2019-08-04

Risk:

Permissions:

storage
activeTab
tabs
chrome://favicon/
unlimitedStorage

Size:

637.00KB

URLs:

Website

Full description:

Source:

Chrome Web Store

Data ingested on:

2025-07-19

Setup email notification for Cluster - Window & Tab Manager

Ranking

# 4,121 ▼ 20

Other rankings

#2874 in Workflow & Planning ▲ 1

#1 in cmd+m (mac) keyword 16

#1 in ctrl+m (windows) keyword 34

#5 in cmd/ctrl+m keyword 55

#8 in tabs backup & restore keyword 13

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User reviews

Cluster - Window & Tab Manager is highly praised for its powerful and user-friendly tab organization features, including easy window merging, bulk actions, and clean tab overviews. However, it faces significant issues as it was disabled by Chrome policy changes, causing loss of saved sessions and diminished functionality. Users miss key features like tab group support and lament the apparent abandonment by developers. Despite these drawbacks, many remain loyal and wish for updates or a revival on other browsers.

Pros

Highly effective and easy to use for managing large numbers of tabs and windows.
Provides clean, at-a-glance views of tabs with useful features like column view and batch operations (multi-select, moving, deleting, detecting duplicates).
Allows easy merging of separate windows into one and supports saving/restoring sessions.
Considered the best tab manager by many users and preferred over many alternatives.
Users express strong loyalty and high recommendation despite recent issues.

Cons

No longer supported by Chrome due to new 'best practices' policies, leading to forced disabling.
Loss of saved sessions and tabs after updates or disabling, causing frustration and data loss.
Lack of support for Chrome's native tab groups, making management cumbersome.
Developer support and updates appear to be lacking or abandoned; website and support emails unresponsive.
Problems syncing across devices and occasional errors when renaming or overwriting tab groups.

Recent reviews

This extension is very useful one. Developer please update it. Chrome latest version has disabled it. I hope minor changes would make it enabled again.

Sh*****, 2025-07-16

Chrome really had to disable this extension, huh? so damn stupid.

ri*****, 2025-07-13

I really hope the devs update this. Stupid chrome force disabled it and now i can't use the thing ffs.

Ca*****, 2025-07-11

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Extension safety

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.

Cluster - Window & Tab Manager 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.

Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

Cluster - Window & Tab Manager is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

Risk likelihood analysis details

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