GNUzilla is the GNU version of the Mozilla suite, and GNU IceCat is the GNU version of the Firefox browser. Its main advantage is an ethical one: it is entirely free software. While the Firefox source code from the Mozilla project is free software, they distribute and recommend nonfree software as plug-ins and addons. Also their trademark license imposes requirements for the distribution of modified versions that make it inconvenient to exercise freedom 3.
Publisher’s description
What is IceCat?
IceCat by Mozilla is open-source Windows software in the web browsers category.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit and ARM64 Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 115.24.0, released on May 28, 2025. The version history goes back to November 1, 2023: 14 releases, all linked to the official files. That is about 8.9 releases a year. The last update is more than a year old.
Popularity and file types
On Windows it registers 9 file types, including .pdf, .html, .xhtml, .webp and .htm. Similar programs include Brave, Waterfox and LibreWolf.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Native ARM64 build for Windows on Arm
- Documented silent install
- Frequent updates (about 8.9 a year)
Cons
- Installation needs administrator rights
- No update for more than a year
- The official download link did not answer at the last check
In short: IceCat is an open-source web browser tool for 64-bit and ARM64 PCs. It is actively maintained. Administrators can deploy it unattended.
Is IceCat safe to download?
- The file is served by icecatbrowser.org, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
F07493BF1E0652F0D9C2D69486B025407EDDFF9CEE31FF4E4CE4BDC6270BF7A8· Open the VirusTotal report for this hash - The link did not answer when we last checked it (October 22, 2026)
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 14 versions ›14 versions over 2 years · about 8.9 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 115.24.0Latest | May 28, 2025 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS) |
| 115.23.1 | May 21, 2025 | — | ARM64 EXE (NSIS)64-bit EXE (NSIS) |
| 115.23.0 | April 29, 2025 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS) |
| 115.22.0 | April 1, 2025 | — | ARM64 EXE (NSIS)64-bit EXE (NSIS) |
| 115.21.1 | April 1, 2025 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS) |
| 115.20.0 | February 7, 2025 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS) |
| 115.19.0 | January 11, 2025 | — | ARM64 EXE (NSIS)64-bit EXE (NSIS) |
| 115.18.0 | November 29, 2024 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Icecat.Icecat -eicecat-115.24.0.en-US.win64.installer.exe /S /PreventRebootRequired=trueRelated guide: How to use winget: install and update apps
Information
- Publisher
- Mozilla
- Category
- Web browsers
- Licence
- MPL-2.0 or GPL-3.0
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64
- Installer
- EXE (NSIS)
- Version
- 115.24.0
- Released
- May 28, 2025
- Added to the catalogue
- November 1, 2023
- Versions listed
- 14
- Updates / year
- 8.9
- Website
- icecatbrowser.org
- winget ID
- Icecat.Icecat
File types it opens (9)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is IceCat free?
Yes. IceCat is open-source software under the MPL-2.0 or GPL-3.0 licence.
Is IceCat safe to download?
The download comes from icecatbrowser.org, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install IceCat with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can IceCat be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does IceCat run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of IceCat?
The versions page lists all 14 versions with links to their official installer files, back to November 1, 2023.
What are alternatives to IceCat?
Brave, Waterfox, LibreWolf, qutebrowser and Safari. The alternatives page compares them.
