TabNest focuses on losing browser tabs, research trails, and work sessions when windows are closed or disrupted. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use TabNest?

TabNest is a consumer product built for firefox users who manage many browser tabs.

Yes — there is a free tier, with paid plans for advanced use.

What platforms does TabNest run on?

TabNest runs on the web and embeddable surfaces.

Is TabNest still active?

Unverified. TabNest 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 TabNest?

Similar projects tracked by PulseGate include TabNest, Tab Sessions, and Tab Haven.

Who develops TabNest?

TabNest is developed by space bear.

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TabNest

Name: TabNest
Author: space bear

mozilla.orgBrowser DevTools & extensions

TabNest is a Firefox extension that saves and restores named tab sessions, merges tabs from multiple windows, and closes duplicate URLs. Its Pro features add lazy-loaded restoration, automatic snapshots, and JSON backup and restore for users managing extensive browsing workflows.

FreemiumWebEmbeddable

Visit mozilla.org

Overview

8 features

In the Browser DevTools & extensions space, TabNest takes a focused approach. It focuses on losing browser tabs, research trails, and work sessions when windows are closed or disrupted. TabNest is a consumer product aimed at firefox users who manage many browser tabs. There is a free tier. TabNest is available on the web and embeddable surfaces.

space bear builds and maintains TabNest, and it first shipped in 2026. Among its 8 catalogued features are Session Saving, Session Restore, and Window Merging. The interface is available in 32 languages, including Czech, German, and Greek.

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

Session Saving
Session Restore
Window Merging
Duplicate Cleanup
Auto-save Snapshots
Lazy-load Restore
JSON Backup
Session Naming

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed3 Sept · 00:22 UTC
TabNest - Tab Session Manager verified against its public source
Source: PulseGate · Open

Frequently asked questions about TabNest

What is TabNest?: TabNest focuses on losing browser tabs, research trails, and work sessions when windows are closed or disrupted. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use TabNest?: TabNest is a consumer product built for firefox users who manage many browser tabs.
Is TabNest free?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does TabNest run on?: TabNest runs on the web and embeddable surfaces.
Is TabNest still active?: Unverified. TabNest 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 TabNest?: Similar projects tracked by PulseGate include TabNest, Tab Sessions, and Tab Haven.TabNest Tab Sessions Tab Haven
Who develops TabNest?: TabNest is developed by space bear.
How long has TabNest been around?: TabNest first shipped in 2026.

At a glance

Pricing: Freemium · pricing page detected · free tier
Platforms: Web
First seen: 3 Sept 2026
Built for: Firefox users who manage many browser tabs
Model: B2C
Solves: Losing browser tabs, research trails, and work sessions when windows are closed or disrupted.

Registered as

Firefox Add-ons: tabnest-tab-session-manager

Developer

space bear

Index record

Indexed: 3 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 3 Sept 2026

Identity audit (13)

Slug: tabnest-tab-session-manager-mozilla-org
Lifecycle state recorded: 3 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 3 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: 3 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/tabnest-tab-session-manager

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