What does Tab Closer do?

Tab Closer focuses on closing browser tabs automatically when their URLs match specified patterns. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Tab Closer?

Tab Closer is an open-source project built for firefox users who want automatic tab management.

Yes — Tab Closer is open source under the Open Source license and free to use.

What platforms does Tab Closer run on?

Tab Closer runs on the web and embeddable surfaces.

Is Tab Closer still active?

Unverified. Tab 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.

What are alternatives to Tab Closer?

Similar projects tracked by PulseGate include TabCloser, Duplicate Tab Closer, and Duplicate Tab Closer.

Who develops Tab Closer?

Tab Closer is developed by AD Nguyen.

When did Tab Closer launch?

Tab Closer first shipped in 2024.

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Tab Closer

Name: Tab Closer
Author: AD Nguyen

mozilla.orgBrowser DevTools & extensions

Tab Closer is a Firefox extension that automatically closes tabs with specified URLs. It requires access to browser tabs and is available for Firefox on desktop and Android.

Open SourceWebEmbeddable

Visit mozilla.org

3alternatives

5features

2024since

Overview

5 features

Tab Closer is a Browser DevTools & extensions project. It focuses on closing browser tabs automatically when their URLs match specified patterns. Tab Closer is an open-source project aimed at firefox users who want automatic tab management. The project is open source (Open Source). It runs on the web and embeddable surfaces.

Behind Tab Closer is AD Nguyen, and it first shipped in 2024. Among its 5 catalogued features are URL matching, automatic tab closing, and firefox integration. The interface is available in 32 languages, including Czech, German, and Greek.

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

URL matching
Automatic tab closing
Firefox integration
Android support
Browser tab access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed19 Sep · 12:59 UTC
Tab Closer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Tab Closer

What does Tab Closer do?: Tab Closer focuses on closing browser tabs automatically when their URLs match specified patterns. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Tab Closer?: Tab Closer is an open-source project built for firefox users who want automatic tab management.
Is Tab Closer free?: Yes — Tab Closer is open source under the Open Source license and free to use.
What platforms does Tab Closer run on?: Tab Closer runs on the web and embeddable surfaces.
Is Tab Closer still active?: Unverified. Tab 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.
What are alternatives to Tab Closer?: Similar projects tracked by PulseGate include TabCloser, Duplicate Tab Closer, and Duplicate Tab Closer.TabCloser Duplicate Tab Closer Duplicate Tab Closer
Who develops Tab Closer?: Tab Closer is developed by AD Nguyen.
When did Tab Closer launch?: Tab Closer first shipped in 2024.

At a glance

Pricing: Open Source
Platforms: Web
License: Open Source
Built for: Firefox users who want automatic tab management
Model: Open source
Solves: Closing browser tabs automatically when their URLs match specified patterns.

Registered as

Firefox Add-ons: tab-closer-ext

Developer

AD Nguyen

Index record

Indexed: 19 Sep 2026
Lifecycle: Alive
Last seen: 19 Sep 2026

Identity audit (13)

Slug: tab-closer-mozilla-org
Lifecycle state recorded: 19 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 19 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
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: 19 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/tab-closer-ext

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