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Antonio Trande 9bb5104466 Release 140.7.0
2026-01-13 22:43:09 +01:00
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firefox-nss-addon-hack.patch Added a workaround for rhbz#1908018 2021-01-11 14:34:28 +01:00
icecat-gcc-always-inline.patch Disable PGO at all 2025-01-10 21:44:42 +01:00
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mozilla-1512162.patch Release 128.12.0 2025-06-26 00:06:00 +02:00
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sources Release 140.7.0 2026-01-13 22:43:09 +01:00

README.md

GNU IceCat is the GNU version of the Firefox ESR browser. Extensions included to this version of IceCat:

  • LibreJS

    GNU LibreJS aims to address the JavaScript problem described in the article "The JavaScript Trap" of Richard Stallman.

  • JShelter

    Mitigates potential threats from JavaScript, including fingerprinting, tracking, and data collection. Slightly modifies the results of API calls, differently on different domains, so that the cross-site fingerprint is not stable. Applies security counter-measures that are likely not to break web pages. Allows fine-grained control over the restrictions and counter-measures applied to each domain.

  • A set of companion extensions for LibreJS by Nathan Nichols are pre-installed, and provide workarounds to use some services at USPS, RSF.org, SumOfUs.org, pay.gov, McDonalds, goteo.org and Google Docs without using nonfree JavaScript.

  • A series of configuration changes and tweaks were applied to ensure that IceCat does not initiate network connections that the user has not explicitly requested. This implies not downloading feeds, updates, blacklists or any other similar data needed during startup.

Origin of the name

The name “IceCat” was coined to show our relationship to the Mozilla Firefox browser. Ice isn't Fire and a Cat isn't a Fox, so it is clearly a different package (we don't want Mozilla blamed for our mistakes, nor cause confusion with their trademarks), but is equally clearly intimately related (of course nearly all of the work comes from the Mozilla foundation effort, so we want to give credit).

The gNewSense BurningDog browser and the Debian IceWeasel browser are similarly derived from Firefox, also with the intent of being free software. Technically, however, these projects are maintained entirely independently of IceCat. (Previously, this GNU browser project was also named IceWeasel, but that proved confusing.) About GNU and the GNU Philosophy

The GNU Project was launched in 1984 to develop a complete Unix-like operating system which is free software—free as in freedom, not price. Its principal sponsor is the Free Software Foundation.

The free software philosophy is the root and motivation of the guidelines and goals of the whole free software movement, a worldwide community.