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IceCat

• Developer: The GNU Project
• Development Status: Active
• Released: 2008
• Platforms: Windows, macOS, Linux, Android
• Type: Browser
• Rendering Engine: Gecko

Overview

GNU IceCat is a free-software web browser based on Firefox.

Related Browsers

These Firefox-derived browsers are separate projects, not official Firefox editions:

Browser	Description
Firefox	The Mozilla browser these projects are based on.
Waterfox	An independently maintained Firefox fork.
LibreWolf	A community Firefox fork focused on privacy and security.
PaleMoon	An independent browser that began as a Firefox fork.
IceCat	GNU's Firefox-based browser and rebrand.
Iceweasel	Debian's former rebranded Firefox package.
Swiftfox	A Firefox-based build optimized for Linux.

User-Agent Examples

Linux

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092921 IceCat/3.0.3-g1

Code Example

import { UAParser } from 'ua-parser-js';
import { BrowserName } from 'ua-parser-js/enums';

const parser = new UAParser();
const ua = 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092921 IceCat/3.0.3-g1';

const browser = parser.setUA(ua).getBrowser();

console.log(browser);
// {name: "IceCat", version: "3.0.3-g1", major: "3"}

console.log(browser.is(BrowserName.ICECAT));
// true