text: Some Linux Distributions offer binary and source packages through their repositories, such as Trisquel, Parabola GNU/Linux-libre and Fedora.
  As of 2024, GNU IceCat is distributed for Windows, macOS and GNU/Linux.
  GNU IceCat is available for macOS 10.14 and higher.
  Additional security and privacy features
  IceCat includes additional security features, such as the option to block third party zero-length image files resulting in third-party cookies, also known as web bugs (This feature is available in Firefox 1.0, 1.5, and 3.0, but the UI option was absent on 2.0). GNU IceCat also provides warnings for URL redirection.
  In version 3.0.2-g1, the certificate of a certificate authority CAcert.org has been added to the list of trusted root certificates. Concern about that decision has been raised in a discussion on the savannah-hackers-public mailing list.
  The GNU LibreJS extension detects and blocks non-free non-trivial JavaScript.
  IceCat also has functionality to set a different user agent string each for different domains in about:config. For example, setting a mobile user agent string for a desired DNS domain would make it possible to view the mobile version of a website on a desktop operating system.
  Licensing
  Gnuzilla is available under the MPL/GPL/LGPL tri-license that Mozilla used for source code. Unlike Mozilla, IceCat's default icons are under the same tri-license.