# Side Space - AI Powered Vertical Tab Manager

> Your AI-powered vertical tabs manager for browsing.

Canonical page: [https://chrome-stats.com/d/side-space](https://chrome-stats.com/d/side-space)

## Overview

- **ID:** `side-space`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Side Space
- **Category:** search-tools,tabs
- **Daily users:** 35
- **Weekly downloads:** 11
- **Rating:** 2.50 / 5 (2 ratings)
- **Version:** 1.2.2
- **Last updated:** 2025-08-29
- **First published:** 2025-08-26
- **Size:** 2.38 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/side-space/)
- **Website:** [https://sidespace.app](https://sidespace.app/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/side-space/privacy/](https://addons.mozilla.org/firefox/addon/side-space/privacy/)

## Description

Alternative to Arc's Sidebar/Edge's Vertical Tabs.

It allows you to have more control over your web browsing experience by effectively managing multiple tabs at once.

🚀 How do vertical tabs work?

Enabling the vertical tabs setting moves your open tabs from the top of your browser window (above the address bar) to the left side of the window. This allows the tabs to be displayed vertically, stacked one on top of the other, instead of horizontally.

✨ Features
<ul><li>⚡️ Manage tabs and tab groups efficiently with a vertical tabs panel.</li><li>🗂️ You can now save, restore, and reorder tabs, including tab groups, using drag-and-drop functionality.</li><li>🔄 The Vertical Tabs Panel presents your open tabs in a side-by-side layout.</li><li>🔍 Efficiently search multiple tabs using fuzzy search.</li><li>🧹 To save memory, you can suspend open tabs.</li><li>☁️ Enable cross-browser cloud synchronization with a single login.</li><li>🌛 Dark Mode Support.</li><li>💾 Space Backup Solution</li><li>📑 Save your session as a JSON file</li><li>☁️ Cloud sync by login</li><li>✨ AI-powered Tab Grouping</li><li>🔗 Group Guardian, Auto Grouping your tabs within URL matchers</li></ul>
👍 The advantages of vertical tabs

Vertical tabs are an effective solution for avoiding clutter in your browser window and maximizing your on-screen space. Additionally, they enhance tab visibility for easier identification.

PS: Side Space is a futuristic vertical tab manager that can only be used with Firefox version 139 or above.

## Rankings

- #19,075 — Overall
- #59 — power
- #162 — space
- #217 — manage
- #231 — manager

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `tabGroups`
- `contextMenus`
- `notifications`

### Host permissions

- `https://www.sidespace.app/api`
- `https://sidespace.app/api`

### Content script matches

- `www.sidespace.app`
- `sidespace.app`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate 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 has low user count. Unpopular extensions 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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/side-space)