Close tabs focuses on closing multiple tabs to the left of the active Firefox tab manually. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is Close tabs for?

Close tabs is an open-source project built for firefox users who manage many browser tabs.

Does Close tabs have a free plan?

Yes — Close tabs is open source under the Open Source license and free to use.

What platforms does Close tabs run on?

Close tabs runs on the web and embeddable surfaces.

Is Close tabs still active?

Unverified. Close tabs 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 Close tabs?

Similar projects tracked by PulseGate include Close Tabs, Close Tabs, and Close Tabs To The Left (i18n).

Who makes Close tabs?

Close tabs is developed by dhartwich1991.

When did Close tabs launch?

Close tabs first shipped in 2017.

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Close tabs

Name: Close tabs
Author: dhartwich1991

github.comBrowser DevTools & extensions

Close tabs to the Left is a Firefox extension that closes tabs positioned to the left of the currently selected tab. It provides a focused browser tab-management action for users who work with many open tabs.

Open SourceWebEmbeddable

Visit github.com

3alternatives

3features

2017since

Overview

3 features

In the Browser DevTools & extensions space, Close tabs takes a focused approach. It focuses on closing multiple tabs to the left of the active Firefox tab manually. Close tabs is an open-source project aimed at firefox users who manage many browser tabs. The project is open source (Open Source). It ships for the web and embeddable surfaces.

It is developed by dhartwich1991, and it first shipped in 2017. Among its 3 catalogued features are close left tabs, active tab detection, and firefox integration.

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

Close left tabs
Active tab detection
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed15 Sep · 06:45 UTC
Close tabs to the Left verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Close tabs

What is Close tabs?: Close tabs focuses on closing multiple tabs to the left of the active Firefox tab manually. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Close tabs for?: Close tabs is an open-source project built for firefox users who manage many browser tabs.
Does Close tabs have a free plan?: Yes — Close tabs is open source under the Open Source license and free to use.
What platforms does Close tabs run on?: Close tabs runs on the web and embeddable surfaces.
Is Close tabs still active?: Unverified. Close tabs 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 Close tabs?: Similar projects tracked by PulseGate include Close Tabs, Close Tabs, and Close Tabs To The Left (i18n).Close Tabs Close Tabs Close Tabs To The Left (i18n)
Who makes Close tabs?: Close tabs is developed by dhartwich1991.
When did Close tabs launch?: Close tabs first shipped in 2017.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 15 Sept 2026
Built for: Firefox users who manage many browser tabs
Model: Open source
Solves: Closing multiple tabs to the left of the active Firefox tab manually.

Registered as

Firefox Add-ons: close-tabs-to-the-left-quantum

Developer

dhartwich1991

Index record

Indexed: 15 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 15 Sep 2026

Identity audit (13)

Slug: close-tabs-to-the-left-github-com-au5622
Lifecycle state recorded: 15 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 15 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
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: 15 Sept 2026
Canonical URL: https://github.com/dhartwich1991/firefox-close-left-tabs-extension

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