TabZen — Smart tab grouping for power browsers

A tab manager that auto-groups duplicate tabs, archives old sessions, and brings everything back when you need it.

The outcome

TabZen

−73%

Tab clutter reduction

8,200+

Monthly active users

< 200ms

Average session restore time

In this study

The brief
The build
The outcome

Built with

chrome.tabs Side panel chrome.storage.session React

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The story

TabZen's brief was simple: "stop me from having 80 tabs open across 5 windows." The hard part was building it without losing user data when Chrome shuts down a service worker — a real risk for any extension that holds state.

We built the storage layer on top of chrome.storage.session as the working set, with chrome.storage.local as the persistent backup. A small reconciliation step on service-worker startup means tabs never get lost, even after a long Chrome update window. The side-panel UI weighs 12KB gzipped, with a per-window archive view and one-click restore.

Sample interfaces

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