A customized Firefox version that allows you to quickly load websites


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  -  82.8 MB  -  Open Source
  • Latest Version

    Cyberfox 52.9.1 (64-bit) LATEST

  • Review by

    Juan Garcia

  • Operating System

    Windows 7 64 / Windows 8 64 / Windows 10 64 / Windows 11

  • User Rating

    Click to vote
  • Author / Product

    8pecxstudios / External Link

  • Filename


  • MD5 Checksum


Cyberfox Web Browser is a web browser based on Mozilla Firefox with the intent of being fast, stable & reliable. It ships with many customizable options allowing you to personalize web browsing experience.

Cyberfox is a web browser software designed for Windows PC users who are looking for a high-performance alternative to mainstream browsers like Google Chrome and Mozilla Firefox. What sets Cyberfox apart is its commitment to providing a familiar Firefox experience while optimizing performance and offering an array of customization options.

⚠ Note: This product is not developed anymore and might not function properly.

If you are looking for alternatives, we recommend you to download Chrome or Brave.


Firefox Compatibility: The app is built on the Mozilla Firefox platform, ensuring compatibility with Firefox extensions, themes, and plugins.

Enhanced Performance: The browser is designed to be faster and more efficient, with optimizations for modern CPUs, multi-core processors, and a 64-bit JavaScript compiler.

Customization: Users can extensively customize the browser's appearance and functionality through various add-ons, extensions, and themes available in the Mozilla Add-ons repository.

Privacy and Security: It offers a range of privacy and security features, including an option for enhanced tracking protection, private browsing, and built-in phishing and malware protection.

Stability: The browser is known for its stability, with regular updates and bug fixes to ensure a smooth browsing experience.

User Interface

Cyberfox's user interface closely resembles the classic Firefox interface, making it easy for Firefox users to transition. It includes a tabbed browsing system, a menu bar, and a customizable toolbar. The UI is clean and user-friendly, and users can personalize it by adding or removing buttons and rearranging elements.

How to Use

Browsing: Enter a URL in the address bar and press Enter to navigate to a website. Use tabs for multiple webpages, and manage them through right-click options.

Bookmarks: Organize your favorite websites by bookmarking them. Access bookmarks through the bookmarks toolbar or the bookmarks menu.

Extensions and Add-ons: Explore the Mozilla Add-ons repository to enhance Cyberfox's functionality with extensions and themes.

Privacy Mode: Activate private browsing to prevent the browser from storing history, cookies, and login information during the session.

Settings: Customize the app by accessing the settings menu to adjust preferences, privacy settings, and more.


What is the update frequency for Cyberfox?
The program is no longer receiving updates because the support has been discontinued, and the author has shut down the official website.

Is Cyberfox compatible with Firefox add-ons?
Yes, the app is compatible with Firefox extensions, themes, and plugins. You can install them from the Mozilla Add-ons repository.

What are the system requirements for Cyberfox?
It requires a Windows operating system (Windows 7 or later) and a 64-bit processor.

How does Cyberfox enhance performance compared to Firefox?
Cyberfox is optimized for 64-bit systems, uses a 64-bit JavaScript compiler, and provides better multi-core processor support, resulting in improved performance on compatible hardware.

Is Cyberfox a secure browser?
Yes, it offers security features such as tracking protection, phishing and malware protection, and private browsing mode to enhance user privacy and security.


Firefox: The original Firefox browser is known for its strong privacy features, open-source nature, and extensive library of add-ons.

Chrome: Chrome is a popular browser known for its speed, seamless integration with Google services, and a vast selection of extensions.

Edge: Microsoft's browser has made significant improvements, offering speed, security, and integration with Windows features.

Opera: Opera combines speed with a built-in ad blocker, free VPN, and a range of productivity features.

Brave: Brave is a privacy-focused browser that blocks ads and trackers by default and rewards users with cryptocurrency for viewing opt-in ads.

  • Enhanced performance on 64-bit systems.
  • Compatibility with Firefox extensions and themes.
  • Familiar user interface for Firefox users.
  • Regular updates and stability.
  • Customization options for personalizing the browsing experience.
  • This application has been discontinued.
  • Limited cross-platform support (Windows only).
  • Smaller user base compared to mainstream browsers.
  • Dependency on donations for development.

It offers a compelling alternative to mainstream web browsers by focusing on enhanced performance and customization while maintaining compatibility with Firefox. Its 64-bit architecture and optimization for modern hardware make it an attractive choice for users seeking a faster browsing experience.

While it may not have the same user base as Chrome or Firefox, Cyberfox is a worthy contender, especially for Windows users looking to maximize their browsing efficiency and personalization options. Since support for the program has expired, consider alternative browsers such as Chrome, Opera, or Firefox.

  • Cyberfox 52.9.1 (64-bit) Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Cyberfox 52.9.1 (64-bit) Screenshot 1
  • Cyberfox 52.9.1 (64-bit) Screenshot 2
  • Cyberfox 52.9.1 (64-bit) Screenshot 3
  • Cyberfox 52.9.1 (64-bit) Screenshot 4
  • Cyberfox 52.9.1 (64-bit) Screenshot 5

What's new in this version:

- Fixed language auto packaging issue incorrect language pack versions

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