Multi-Session Container Tabs

Name: Multi-Session Container Tabs
Author: bfriedrich

Open multiple Container Tabs with one click, each running in its own isolated session. Great for multi-account access, testing, and parallel browsing.

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Features & Capabilities

Multi-Session Container Tabs makes it easy to open several Firefox Container Tabs at once, all loaded with the same URL. Each tab gets its own completely isolated session with separate cookies, cache, and storage, so they never interfere with each other.

Why use it?

Multi-account workflows. Sign into the same service with different accounts, side by side, without logging out and back in.
Development and testing. Quickly spin up isolated sessions to test session handling, caching behavior, or concurrent user scenarios.
Parallel browsing. View the same page in independent contexts without cross-session interference.

Features

Open up to 30 isolated container sessions at once
Configurable delay between tab opens (0 to 10 seconds)
Custom naming prefix for easy tab identification
One-click cleanup to remove all created containers and tabs
Remembers your last-used settings
URL is optional. Open empty containers and navigate later

How it works

Click the toolbar icon, enter a URL (or leave it blank), set the number of sessions, and click Open Sessions. Each tab opens in a unique Firefox container with its own cookie jar. When you're done, click the cleanup button to remove everything the extension created.

Built on Firefox's native Container Tabs feature using the contextualIdentities API. No data is collected or transmitted. Fully open source.

User Growth & Download Statistics

Add-on

By:

bfriedrich

Daily users:

Version:

1.0.0 Last updated: 2026-02-22

Version code:

6154819

Creation date:

2026-02-19

Risk:

Permissions:

contextualIdentities
cookies
tabs
storage

Size:

17.57KB

URLs:

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-25

Compare stats and ranking:

Ranking

# 43,184 ▲ 164

Other rankings

#74 in session keyword 51 ▼ 2#123 in contain keyword 30 ▲ 1#210 in mission keyword 8 ▼ 4

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

bfriedrich

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/multi-session-container-tabs/

Is Multi-Session Container Tabs Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Multi-Session Container Tabs requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Multi-Session Container Tabs may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****