# Tab Session Manager

> Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.

Canonical page: [https://chrome-stats.com/d/tab-session-manager](https://chrome-stats.com/d/tab-session-manager)

## Overview

- **ID:** `tab-session-manager`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** sienori
- **Category:** appearance,tabs
- **Daily users:** 160,552
- **Weekly downloads:** 7,241
- **Rating:** 4.16 / 5 (1,235 ratings)
- **Version:** 7.4.0
- **Last updated:** 2026-07-17
- **First published:** 2017-10-02
- **Size:** 751 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tab-session-manager/)
- **Website:** [https://github.com/sienori/Tab-Session-Manager](https://github.com/sienori/Tab-Session-Manager)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/tab-session-manager/privacy/](https://addons.mozilla.org/firefox/addon/tab-session-manager/privacy/)

## Description

Tab Session Manager saves and restores the exact state of your browser windows and tabs. It includes auto-save, interval autosave, and cloud sync to keep sessions in sync across devices.

Organize sessions with names and tags, import/export sessions, and support tab groups. The extension works with Chrome and Firefox for tab group saving and overall session management.

## Rankings

- #114 — Overall
- #1 — Tabs
- #8 — Appearance
- #1 — mission
- #1 — session
- #1 — state

## Permissions and access

### Permissions

- `storage`
- `unlimitedStorage`
- `tabs`
- `tabGroups`
- `cookies`
- `downloads`
- `identity`
- `alarms`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Very low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was updated in the past 3 months. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users praise the add-on for saving/restoring very large tab sessions and preventing loss after crashes, plus good customization and a manual export option. However, reliability issues recur: sessions can be deleted by bugs, auto-save can fail, and backups may be outdated. It also fails to preserve tab groups/Tree Style Tab state and per-tab history. Open/restore can be flaky, and delete actions lack confirmation, sometimes causing duplicates and memory bloat. Overall, strong concept, with fragile execution.

### Pros

- Saves and restores large tab sessions and thousands of tabs after crashes or closures.
- Keeps sessions across multiple windows and helps prevent lost work.
- Highly customizable and flexible workflow.
- Supports manual export of saved sessions.
- Has saved users from major losses by restoring many tabs quickly.

### Cons

- Bugs can delete all sessions and auto-save can fail, leading to data loss or stale backups.
- Does not preserve tab groups or Tree Style Tab state, nor per-tab browsing history on restore.
- Open/restore actions can misfire (Open button may not work, startup window shifts) and can create duplicate windows, increasing memory usage.
- Delete button is too close to Open and often lacks a confirmation, risking accidental deletions.
- Behavior varies across Firefox updates and some users report memory bloat from duplicated tabs.

## Similar extensions and apps

- [Tab Session Manager - Save & Restore](https://chrome-stats.com/d/tabsm) — 9 users, 4.50 / 5
- [Tab Session Master](https://chrome-stats.com/d/tab-session-master) — 251 users, 3.54 / 5
- [Session Manager](https://chrome-stats.com/d/session-manager-latest) — 7 users, 5.00 / 5
- [Session Tab Manager](https://chrome-stats.com/d/session-tab-manager)
- [Tab Session Manager](https://chrome-stats.com/d/tab-session-browser) — 6 users
- [Browser Session Manager](https://chrome-stats.com/d/browser-session-manager) — 1 users
- [Workflow Session Manager](https://chrome-stats.com/d/workflow-session-manager) — 6 users, 1.00 / 5
- [Tab Session Manager](https://chrome-stats.com/d/tab-session-manager-br) — 1 users
- [Tab Session Manager](https://chrome-stats.com/d/session-saviour) — 39 users
- [Session Manager Pro - Tabs, Sessions, Groups](https://chrome-stats.com/d/session-manager-pro) — 37 users, 2.33 / 5
- [Fabulous Tab Session Manager](https://chrome-stats.com/d/fabulous-tab-session-manager)
- [Tab Session Master](https://chrome-stats.com/d/tab-session1-master)

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Source: [Chrome-Stats](https://chrome-stats.com/d/tab-session-manager)