Who should use Duplicate Tabs Closer?

Duplicate Tabs Closer is an open-source project built for people who use multiple browser tabs.

What platforms does Duplicate Tabs Closer run on?

Duplicate Tabs Closer runs on the web and embeddable surfaces.

Is Duplicate Tabs Closer still active?

Unverified. Duplicate Tabs Closer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who develops Duplicate Tabs Closer?

Duplicate Tabs Closer is developed by Peuj.

When did Duplicate Tabs Closer launch?

Duplicate Tabs Closer first shipped in 2013.

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Duplicate Tabs Closer

Name: Duplicate Tabs Closer
Author: Peuj

github.comBrowser DevTools & extensions

Duplicate Tabs Closer is an open-source browser extension that detects duplicate tabs and can close them across Chrome, Firefox, Edge, Opera, Vivaldi, and Brave. It supports visual themes and configurable URL and title pattern rules.

Open SourceWebEmbeddable

Visit github.com

Overview

7 features

Duplicate Tabs Closer sits in PulseGate's Browser DevTools & extensions category. It focuses on keeping browser sessions organized by finding and closing duplicate tabs automatically. It is built as an open-source project for people who use multiple browser tabs. Duplicate Tabs Closer is open source under the Open Source license. It runs on the web and embeddable surfaces.

Behind Duplicate Tabs Closer is Peuj, and it first shipped in 2013. Among its 7 catalogued features are duplicate detection, automatic tab closing, and URL pattern rules.

Summary written by a language model from the project’s public pages.

Duplicate detection
Automatic tab closing
URL pattern rules
Title pattern rules
Visual themes
Manifest V3
Multi-browser support

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSOpen SourceFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sept · 01:58 UTC
Duplicate Tabs Closer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Duplicate Tabs Closer

What is Duplicate Tabs Closer?: Duplicate Tabs Closer focuses on keeping browser sessions organized by finding and closing duplicate tabs automatically. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Duplicate Tabs Closer?: Duplicate Tabs Closer is an open-source project built for people who use multiple browser tabs.
Does Duplicate Tabs Closer have a free plan?: Yes — Duplicate Tabs Closer is open source under the Open Source license and free to use.
What platforms does Duplicate Tabs Closer run on?: Duplicate Tabs Closer runs on the web and embeddable surfaces.
Is Duplicate Tabs Closer still active?: Unverified. Duplicate Tabs Closer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who develops Duplicate Tabs Closer?: Duplicate Tabs Closer is developed by Peuj.
When did Duplicate Tabs Closer launch?: Duplicate Tabs Closer first shipped in 2013.
Is Duplicate Tabs Closer open source?: Yes — Duplicate Tabs Closer is open source under the Open Source license.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 8 Sept 2026
Built for: people who use multiple browser tabs
Model: Open source
Solves: Keeping browser sessions organized by finding and closing duplicate tabs automatically.

Registered as

Firefox Add-ons: duplicate-tabs-closer

Developer

Peuj

Index record

Indexed: 8 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 8 Sept 2026

Identity audit (13)

Slug: duplicate-tabs-closer-github-com
Lifecycle last checked: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 8 Sept 2026
Canonical URL: https://github.com/Peuj/duplicate-tabs-closer

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