Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of ContainerGate

ContainerGate by AxelTM1

Intercepts external URLs and asks which Firefox container to open them in.Intercepts links opened from outside Firefox (email, Slack, terminal) and lets you choose which container to open them in. Set per-domain rules and a whitelist so trusted sites

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
ContainerGate gives you control over where externally-opened links land.

When an app outside Firefox (email client, Slack, a terminal) opens a URL, ContainerGate steps in and asks which Firefox container to open it in — keeping work, personal, and throwaway browsing properly isolated.

Features
- Detects links opened from outside the browser
- Visual modal to pick from your available containers
- Per-domain rules: remembers your choice automatically
- Whitelist: trusted domains open directly, no prompt
- "Open without container" option when you need it
- Toolbar panel to manage your rules and whitelist

Requirements
Requires the Firefox Multi-Account Containers extension to provide the containers.

Privacy
ContainerGate collects no data. All rules and whitelist entries are stored locally on your device.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Copy add-on ID
Version
1.0.1
Size
447.92 KB
Last updated
4 days ago (Jun 27, 2026)
Related Categories
  • Appearance
  • Tabs
License
Mozilla Public License 2.0
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.