For many professionals and businesses, Google
Chrome
serves as a daily workhorse. With an increasing reliance on
browser
-based applications, proper
tab management
can significantly boost your
business productivity
. One of the
best chrome extensions
designed to help organize daily tasks and manage your online workspace is a software app called Cluster - a window and tab manager extension for Chrome. Cluster is highly-rated, earning an aggregate rating of 4.5 out of 5 based on user reviews.
Cluster is a
top extension
that helps manage multiple open tabs and windows while using minimal system
resources
. Its efficient design and user-friendly interface have made it popular among users aiming to organize their daily life in the digital space.
Beyond tab management, Cluster also doubles as a tab project manager, allowing you to save and restore windows and tab sessions as working projects. The restored windows launch each tab in a suspended state to minimize the load time when opening lots of tabs at once, a beneficial feature for those managing a busy daily schedule.
Beneficial Features for Daily Organization
Cluster is equipped with a myriad of features tailored to enhance your browser organization. These include the ability to undo removed tabs or windows, sorting windows tabs for a better overview, and the option to save and restore sessions from the manager or a drop-down menu. You can easily move tabs between windows, suspend all windows tabs, and even see the real tab URL when using the Great Suspender.
Cluster is fast, simple, and resource-efficient, ensuring it doesn’t impede your system’s performance. It's an excellent tool for controlling your browser sessions, keeping things organized, and freeing up memory. For users who work across multiple machines, Cluster offers the ability to sync your saved windows, making it an indispensable tool for your business productivity.
User Reviews and Feedback
User reviews for Cluster have been largely positive, with many users praising its robust functionality. Oliver Conroy describes it as "the best and most robust Chrome window/tab manager I've tried." Similarly, Jonathan Brooks commends its "excellent functionality and performance."
However, the chrome extension is not without its critics. User 'autoteleology', for instance, warns that the extension erased all their data during an attempted merge of their tab collection. User 'Ling Mao' also mentioned the lack of a 'mid-click close tab feature.'
Despite these concerns, the overwhelming consensus among users is that Cluster is a powerful tool for managing Chrome tabs and windows, significantly enhancing daily organization and business productivity.
Conclusion
Whether you're organizing daily tasks, managing a heavy web workload or boosting business productivity, Cluster is a Chrome extension worth considering. With its high rating and positive reviews, it’s clear that this tool adds substantial value to its users' online experience. It's time to take control of your digital workspace and unlock the benefits of effective tab management with Cluster.
30 Reviews For This Extension
UPDATE: THANKS TO Chrome DEVS, If you had Cluster before it was removed, you can still use it at your own risk. Go to extensions, find Cluster in "Safety Check" part, push ellipsis, "Keep this extension", then turn it on, confirming you know the risks. And it's working!!!! One of the best extensions out there! Does almost everything I have ever wished for tabs management. But it lacks one of the features which can improve usability big time: NAMING WINDOWS! Google has implemented window naming pretty long ago, so I don't understand why does Cluster's developer is avoiding making the same for Cluster... As a surfer with 400+ open tabs at the same time (even more sometimes), I'm telling you it would be way beyond convenient to manage tabs between named windows, apart from Window 1, Window 2, Window 15. Please?!
I love Cluster so much I'm going to attempt using Google's Gemini 2.5 to add tab group headings within Cluster's tab lists, wish me luck. I don't know if this helps, but after reading about other people's recent issues, I can say that while using Slimjet browser, Cluster hasn't encountered any issues, lost tabs or having had any other extensions being turned off. Slimjet is a Chromium-based browser, so it's identical to Chrome in most ways, except it has additional features & options. Something I like the most is being able to 'Auto hide on top' the Bookmark Bar, which makes it so it's hidden until you move your mouse under the address bar, so this always gives you more browser page screen space.
Awesome extension! I've used it for years, and now Google kills it without warning. To any and all Google employees: Your Learn More / Help section doesn't tell me which "best practices" the extension no longer follows. And that's a misnomer, because the extension didn't change anything. The "best practices" changed, without any warning to users. So now a great extension is dead, and Google won't truly tell me why. Google has engineers that make great software. Yet they can't give users a notification that "best practices" are changing? That the data users had the extension collect may be lost forever? That a tool we've relied upon for years may die? Really? With all their knowledge and skills, they can't give us a simple notification???
Best I've used so far. Very easy to merge separate windows in to one. Can be opened as a separate tab, not a popup; that way you can organize a thousand tabs.
Best tab manager I've ever used. So sad to see it go :/ Willing to pay for this
Using it until recently. I would like to check whether there is a plan to get it back to compliance. Missing it, alternatives miss key features Cluster excels at.
Best Tab Manager extension. Sucks google blackballed them
I'm very selective about writing a review, and I WANT TO review this extension! This has been THE BEST tab manager I've ever used (and I've used a LOT of 'em). It's absolutely infuriating that Google is targeting such a small company to promote its own tab manager product. As one can see from other reviews, many users are frustrated by the sudden removal of this extension, but I don't know how many understand that it isn't the extension developer's fault; it's actually Google making the end users pay the price. I really wish more people understood why this extension, which has received praise for years, suddenly became labelled as "not following best practices." I have been using this extension for at least 7 or 8 years now, and during this time, I have done a LOT OF RESEARCH to find something equivalent (because they didn't support Safari), but I've come up empty—ALWAYS! For those who read this, please know that even though it isn’t supported anymore for new installations, existing users can continue to use it by simply turning it back on (just as I did because I was SO DISAPPOINTED to find out it had been "removed").
ABSOLUTELY RIDICULOUS! It stopped working and i lost ALL my saved sessions. They were SO SO important (which is the reason why i saved them). Now Gone! thanks alot. EDIT: (3/25/25) I am quite adept at programming/software dev and found and viewed the source code for this extension in order to find and save the data (all my saved tabs/sessions) that simply disappeared one day and have come to the unfortunate conclusion that it's simply impossible to do. With other extensions that have "lost" my data, i ended up finding that data and extracting it. But it looks like Cluster used non-local storage options and without correct api key/firebase credentials etc if you've lost your tabs; there is NO WAY to get them back. Im sorry. Screw you Cluster
Still works for me on the old version of Chrome. Just upgraded to the new Chrome on my Macbook Air and the extension was turned off because "it is no longer supported". What?! All that work down the drain. My advice is to archive your windows by exporting the saved ones, and if you're like me and have way too many windows open, save the page as an html file and then convert it. You'll get links to all your pages, with headings. Hopefully it will come back on Chrome someday.
Stopped working, no longer works, I lost my "Saved Windows", the tab no longer loads and I can not export the data for my saved windows.
All of sudden the "Saved Windows" keeps loading for like 1 minute then poof. All is gone
I was a paid user for a long time, but the domain seems to be expired or non-functional (clusterwm.com) and emails for support bounce back. This plugin was great for a long time, but I believe it has been abandoned. Beware that sometimes the plugin deletes a tab group during a rename. Also sometimes it doesn't synchronize across systems, or when it does, it overwrites groups that were saved there without checking it first. I gave 2 stars because of how long I used it and how much I enjoyed it over the years. If the current maintainer contacts me, we can discuss these issues and I will consider changing my rating.
Pretty good organizer on its own. I really like the sorting and duplicate-removal functionalities. However, it's missing support for tab groups which makes it really cumbersome to use. Any change in the tab order will break the groups. Please consider adding support for this central Chrome feature
Very good and effective. Save memory. I have often over 150 tabs, this is perfect for my ADHD brain.
I have been using it for months and liked it. I was very handy when the Edge browser would close an open window and I could retrieve it. Something changed today and I was unable to do that so I decided to try their "save window" feature. When I re-opened a saved window, every tab says it's suspended, meaning I have to refresh each page. One star rating because I got a message when I got to this page that it won't be supported much longer.
pretty damn good
This is perfect except one thing: is there no way to save all open windows at once? If there is, I can't figure it out.
the best tab organizer for me! And I tried quite a few. I hope google won't remove it from the store
Who is looking for an alternative, I'm moving to TabXpert, it's MV3 compatible and has import from this extension.
You can save Windows with tabs under them, but there does not seem to be a way to open multiple saved windows at once.
This is by far the best Tab Manager available for Chrome and the main reason why I have stayed with Chrome for the past years. With Google/Chrome moving to make various extensions obsolete, such as Cluster - Window & Tab Manager, uMatrix, etc., I hope that the developers consider to port their extension to Firefox. There is absolutely NO decent tab manager available for Firefox that comes close anywhere to Cluster WM. I think that Cluster WM for Firefox would be a hit. I would even be happy to pay for a license - if reasonably priced - and I am sure other users would do so as well.
I have tried almost every tab manager extension including Acid Tabs, Tabli, Onetab, Clutter Free, Tab Session Manager. For my use case none of them come close to the capability and user experience of Cluster Window Manager. Key advantages of this app are 1. Clean, at a glance view of all tabs that, with column view, makes use of horizontal screen real estate instead of just a vertical scroll. 2. Easy multi-select and select-all, with batch tasks such as moving tabs between windows, deleting tabs, detecting duplicate tabs. 3. Bulk merge window option It would be great if it supported tab groups. You can still have tab groups, but the extension does nothing to show them or help manage them, Some other tab managers can do that, however even without that feature I find this easier to user. I really hope the developer can make the necessary updates to support this extension and follow the chrome best practices. I would pay for this extension but the buy license option is broken on the website.
This extension works well but has a serious flaw. If enabled, it opens tabs to the right of the last tab opened. I don't want that and there is no way to turn that off. I end up disabling the extension most of the time as a result.
This is one of the highest quality extensions I have ever used! It's so good, it should come with the browser itself!
not to sound like a bot but this is genuinely one of the best extensions. if only it could sort bookmarks too so i didnt have to open all of them at once so this could sort them. my computer dies when i do that...
Very good, thout would love to be able to name windows or somehow read the already named windows via the inherent chrome window naming system. Otherwise perfect.
Tried to send email to support but it wasnt delivered. Outlook said the email address didnt exist. I had a few feature requests!!!
very nice, only flaw, you should be able to move the saved cards in order to put the groups in the preferred order
all good...