Tab Lock focuses on preventing important Firefox tabs from being accidentally closed. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Tab Lock?

Tab Lock is a consumer product built for firefox users who need to protect important browser tabs.

Yes — Tab Lock is free to use.

Is Tab Lock still active?

Unverified. Tab Lock 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 projects are similar to Tab Lock?

Similar projects tracked by PulseGate include Page Lock, Browser Lock, and Tab Focus.

Tab Lock is developed by LoTas.

How long has Tab Lock been around?

Tab Lock first shipped in 2024.

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Tab Lock

Name: Tab Lock
Author: LoTas

mozilla.orgBrowser DevTools & extensions

Tab Lock is a Firefox browser extension that locks tabs and prevents them from being closed accidentally. It is intended for individual Firefox users who need to keep important tabs open.

FreeWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

1alternative

4features

2024since

Overview

4 features

In the Browser DevTools & extensions space, Tab Lock takes a focused approach. It focuses on preventing important Firefox tabs from being accidentally closed. It is built as a consumer product for firefox users who need to protect important browser tabs. It is available for free. It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

It is developed by LoTas, and it first shipped in 2024. Key capabilities include tab locking, close prevention, and browser tab access. The interface is available in 32 languages, including Czech, German, and Greek.

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

Tab locking
Close prevention
Browser tab access
Website access permissions

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed13 Sep · 02:39 UTC
Tab Lock verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Tab Lock

What is Tab Lock?: Tab Lock focuses on preventing important Firefox tabs from being accidentally closed. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Tab Lock?: Tab Lock is a consumer product built for firefox users who need to protect important browser tabs.
Is Tab Lock free?: Yes — Tab Lock is free to use.
What platforms does Tab Lock run on?: Tab Lock runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Tab Lock still active?: Unverified. Tab Lock 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 projects are similar to Tab Lock?: Similar projects tracked by PulseGate include Page Lock, Browser Lock, and Tab Focus.Page Lock Browser Lock Tab Focus
Who makes Tab Lock?: Tab Lock is developed by LoTas.
How long has Tab Lock been around?: Tab Lock first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who need to protect important browser tabs
Model: B2C
Solves: Preventing important Firefox tabs from being accidentally closed.

Registered as

Firefox Add-ons: tab-lock

Developer

LoTas

Index record

Indexed: 13 Sep 2026
Lifecycle: Alive
Last seen: 13 Sep 2026

Identity audit (13)

Slug: tab-lock-mozilla-org
Lifecycle state recorded: 13 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 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: 13 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/tab-lock

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