Who is Tab Islands for?

Tab Islands is an open-source project built for firefox users who want stronger privacy and session isolation.

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

What platforms does Tab Islands run on?

Tab Islands runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Tab Islands still maintained?

Unverified. Tab Islands 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 Islands?

Similar projects tracked by PulseGate include Tab Interceptor, Tabs Aside, and Container Tab Groups.

Who makes Tab Islands?

Tab Islands is developed by natasha-codes.

When did Tab Islands launch?

Tab Islands first shipped in 2020.

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Tab Islands

Name: Tab Islands
Author: natasha-codes

github.comBrowser DevTools & extensions

Tab Islands is an open-source Firefox extension that automatically separates logins and web trackers into isolated browsing contexts. It is intended for Firefox users who want to reduce cross-site tracking and keep account sessions separated.

Open SourceWebEmbeddablemacOSWindowsLinux

Visit github.com

Overview

4 features

Tab Islands is a Browser DevTools & extensions project. It focuses on preventing login sessions and web trackers from sharing data across unrelated browsing contexts. It is built as an open-source project for firefox users who want stronger privacy and session isolation. Tab Islands is open source under the Open Source license. Tab Islands is available on the web, embeddable surfaces, macOS, Windows, and Linux.

natasha-codes builds and maintains Tab Islands, and it first shipped in 2020. Key capabilities include automatic isolation, login separation, and tracker isolation.

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

Automatic isolation
Login separation
Tracker isolation
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

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

Indexed13 Sep · 10:31 UTC
Tab Islands verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Tab Islands

What does Tab Islands do?: Tab Islands focuses on preventing login sessions and web trackers from sharing data across unrelated browsing contexts. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Tab Islands for?: Tab Islands is an open-source project built for firefox users who want stronger privacy and session isolation.
Is Tab Islands free?: Yes — Tab Islands is open source under the Open Source license and free to use.
What platforms does Tab Islands run on?: Tab Islands runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Tab Islands still maintained?: Unverified. Tab Islands 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 Islands?: Similar projects tracked by PulseGate include Tab Interceptor, Tabs Aside, and Container Tab Groups.Tab Interceptor Tabs Aside Container Tab Groups
Who makes Tab Islands?: Tab Islands is developed by natasha-codes.
When did Tab Islands launch?: Tab Islands first shipped in 2020.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 13 Sept 2026
Built for: Firefox users who want stronger privacy and session isolation
Model: Open source
Solves: Preventing login sessions and web trackers from sharing data across unrelated browsing contexts.

Registered as

Firefox Add-ons: tab-islands

Developer

natasha-codes

Index record

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

Identity audit (13)

Slug: tab-islands-github-com
Lifecycle state recorded: 13 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 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: 13 Sept 2026
Canonical URL: https://github.com/natasha-codes/firefox-tab-islands

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