Open Source GNU IceCat Alternatives for Windows
GNU IceCat is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The most popular Windows alternative is 
Mozilla Firefox, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to GNU IceCat and loads of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to GNU IceCat are 
Google Chrome (Free), 
Brave (Free, Open Source), 
Chromium (Free, Open Source) and 
Opera (Free).
- A free and open source web browser descended from the Mozilla Application Suite. Firefox is highly extensible, with thousands of third-party add-ons available.
- Free • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- BSD
- iPad
- Snapcraft
- PortableApps.com
- Haiku
- Fire TV
- Gecko
- Brave Web Browser is a fast, free, secure web browser with a built-in ad blocker*, tracking and security protection, and optimized data and battery experience.
- Free • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Electron / Atom Shell
Secure private and the fastest browser. Best used on mobile devices, but desktop use is getting better and better - Chromium is the open-source browser project from which Google Chrome takes its source.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- PC-BSD
- Xfce
- Blink Rendering Engine
- Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux focusing on efficiency and ease of use.
- Firefox Developer Edition brings you latest features, fast performance, and the development tools you need to build for the open web.
- A Google Chromium variant for removing Google integration and enhancing privacy, control, and transparency.
- Firefox Nightly is the development (alpha) release channel of Mozilla Firefox .
- Free • Open Source
- Mac
- Windows
- Linux
- Android
- Chrome OS
- Android Tablet
- Kindle Fire
- Falkon, formerly QupZilla, is a QtWebEngine based cross-platform web browser.
It aims to be a lightweight web browser available through all major platforms. - Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
- Web browser controlled by the user, not vice-versa.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- Haiku