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Firefox Multi-account Containers vs Portmaster

Professional comparison and analysis to help you choose the right software solution for your needs.

Firefox Multi-account Containers icon
Firefox Multi-account Containers
Portmaster icon
Portmaster

Firefox Multi-account Containers vs Portmaster: The Verdict

⚡ Summary:

Firefox Multi-account Containers: Firefox Multi-account Containers is a Firefox browser extension that allows you to segregate browser cookies, cache and other data by account or website. It helps prevent tracking, mixing of online identities and data leakage across accounts or websites.

Portmaster: Portmaster is a free, open source application firewall and HTTPS proxy for Windows that protects against malicious content getting to your computer. It blocks malware, ads, and trackers from making connections.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Firefox Multi-account Containers Portmaster
Sugggest Score — —
Category Web Browsers Security & Privacy
Pricing Free Open Source

Product Overview

Firefox Multi-account Containers
Firefox Multi-account Containers

Description: Firefox Multi-account Containers is a Firefox browser extension that allows you to segregate browser cookies, cache and other data by account or website. It helps prevent tracking, mixing of online identities and data leakage across accounts or websites.

Type: software

Pricing: Free

Portmaster
Portmaster

Description: Portmaster is a free, open source application firewall and HTTPS proxy for Windows that protects against malicious content getting to your computer. It blocks malware, ads, and trackers from making connections.

Type: software

Pricing: Open Source

Key Features Comparison

Firefox Multi-account Containers
Firefox Multi-account Containers Features
  • Allows you to segregate browser cookies, cache and other data by account or website
  • Lets you open multiple tabs/windows with different identities at the same time
  • Easy to create new containers and assign sites to them
  • Helps prevent tracking and mixing of online identities across accounts/websites
Portmaster
Portmaster Features
  • Application firewall
  • HTTPS proxy
  • Blocks malware, ads, and trackers
  • Protects against malicious content
  • Open source

Pros & Cons Analysis

Firefox Multi-account Containers
Firefox Multi-account Containers

Pros

  • Improves privacy and prevents data leakage between accounts
  • Lets you separate work and personal browsing easily
  • Simple to set up and use
  • Free and open source

Cons

  • Requires some manual configuration
  • Can take time to set up different containers
  • Some website functionality may break
  • Not all tracking is prevented
Portmaster
Portmaster

Pros

  • Free to use
  • Effective at blocking malicious content
  • Open source and customizable
  • Lightweight and easy to use

Cons

  • Only available for Windows
  • May block some legitimate content
  • Limited customization options

Pricing Comparison

Firefox Multi-account Containers
Firefox Multi-account Containers
  • Free
Portmaster
Portmaster
  • Open Source

Related Comparisons

Learn More About Each Product

Firefox Multi-account Containers
Firefox Multi-account Containers
Reviews, pricing & alternatives →
Portmaster
Portmaster
Reviews, pricing & alternatives →

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