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GNU IceCat

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GNU IceCat
GNU IceCat (formerly GNU IceWeasel), or more specifically GNUzilla IceCat, is a browser based on the latest extended stable release (ESR) of the popular Firefox browser by Mozilla.

The GNU Project keeps IceCat in synchronization with upstream development of Firefox while removing all trademarked artwork. Unlike Firefox, IceCat recommends only free software add-ons. With a focus on freedom and privacy, IceCat is designed to make it easy for the user to: block execution of non-free JavaScript with GNU LibreJS or disable all JS, block privacy trackers with SpyBlock (Adblock Plus fork), get redirected to HTTPS when possible with HTTPS Everywhere, and more!

GNU IceCat is part of GNUzilla, which aims to package GNU versions of the entire suite of Mozilla programs.

See also


The user manual pages are at

You can contribute by joining the wiki and editing the manuals.

"IRC irc:// " IRC general channel

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This package is listed in the following Collections:


LicenseVerified byVerified onNotes
MPL1.1Kelly Hopkins14 September 2010
GPLv2orlaterKelly Hopkins14 September 2010
LGPLv2.1orlaterKelly Hopkins14 September 2010

Leaders and contributors

Rubén Rodríguez Maintainer

Resources and communication

Audience Resource type URI
Developer VCS Repository Webview
bug-gnuzilla -- GNUzilla discussion and bug reports. Mailing List
bug-gnuzilla -- GNUzilla discussion and bug reports. Support
bug-gnuzilla -- GNUzilla discussion and bug reports. Bug Tracking

Software prerequisites

This entry (in part or in whole) was last reviewed on 22 April 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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