Organize, find, and manage your work in the browser
If you’re a long-time user of the Cluster Tab Manager, you might have noticed its performance issues recently. From tabs mysteriously disappearing to compatibility warnings with Chrome, the writing is on the wall. Sadly, the beloved tool for managing browser tabs has become an unreliable choice for Chrome users.But don’t worry. There’s a better solution. This guide walks you through everything you need to know about replacing Cluster with a more reliable, modern alternative and how to preserve your precious tabs along the way.
For years, Cluster Tab Manager was a lifesaver for keeping countless tabs organized. However, the extension is no longer a viable option due to these key issues:
Cluster Tab Manager hasn’t been updated since 2019. Its official website, clusterwm.com no longer works, and the extension has fallen far behind evolving browser requirements.
Chrome may have noticed warnings in 2024 that the extension “may no longer be supported.” Cluster wasn't secure or reliable to begin with and it was never updated or maintained so Chrome started warning that it might not be supported after Chrome updates.
In early 2025 Chrome officially disabled Cluster Tab Manager, citing its inability to meet the latest best practices for Chrome extensions, such as compatibility with the new Manifest V3 (MV3) requirements.
Reddit threads are filled with complaints about lost tabs, leaving many users frustrated and scrambling for a reliable solution.
The bottom line? If you’re still relying on Cluster, you risk losing your tabs and productivity. It’s time to switch to a modern, dependable alternative.
Say hello to Partizion, a cloud-based tab session manager that solves all the issues Cluster has left behind. Built with reliability and modern usage in mind, Partizion is already the trusted choice for managing tabs for thousands of Chrome users.
Unlike Cluster, which stored data locally, Partizion automatically syncs your tabs to the cloud. This means no matter what device you're using, your tabs are just a click away.
Partizion uses a unique local storage + cloud storage syncing engine which can almost guarantee you'll never lost tabs — even if chrome shuts down, your laptop bugs out, or you lose internet connection.
Partizion’s auto-updating collections ensure your tabs are always saved in real time. Forget manually saving sessions or worrying about unexpected crashes.
With over 6+ years of active maintenance, Partizion has helped users save more than 10 million sessions. Stability and security are built into the platform, making it a dependable alternative.
Save individual tabs, whole windows, or select specific tabs to save with just a few clicks. The Partizion Chrome extension is designed for ease of use and integrates seamlessly into your browsing workflow.
Unlike Cluster, Partizion is actively updated to meet browser and user needs. We're proud of what we've built with Partzion.
Transitioning from Cluster to Partizion doesn’t need to be complicated. Here’s a foolproof way to make the switch:
If you still have access to your saved windows in Cluster, start by opening the tabs and windows you want to keep.
Partizion will automatically save these windows as 'sessions'. You can restore or re-open them at any time. If you'd like to create permanent 'collections' of tabs:
Install the Partizion Chrome Extension if you haven’t already. From there:
You can also save tabs directly from the Partizion Dashboard. For step-by-step instructions, check out this Partizion guide.
Enable auto-updating on the collections you want to stay up to date (Example: a set of tabs for a WIP project vs a Reading list that you want to manually update) in Partizion if you want your open tabs to always stay synced without manual intervention.
With Partizion, your tabs are securely stored in the cloud, accessible on any device, and reliably managed without errors or crashes.
Still on the fence? Don’t just take our word for it. Here’s why fellow tab enthusiasts are making the switch:
Cluster Tab Manager had its time, but it’s clear that the extension has reached the end of its life. Don’t risk losing your tabs, your time, or your productivity. Switch to Partizion, the reliable and modern tab manager Chrome users trust.
Start your free 14-day trial with Partizion today and discover how effortless tab management can be. Your future self (and your browser) will thank you!
