Firefox Browser, also known as Mozilla Firefox or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. In 2017, Firefox began incorporating new technology under the code name Quantum to promote parallelism and a more intuitive user interface. Firefox is officially available for Windows 7 or newer, macOS, and Linux. Its unofficial ports are available for various Unix and Unix-like operating systems including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix.
Publisher’s description
What is Mozilla Firefox (ca)?
Mozilla Firefox (ca) is an open-source web browser program for Windows from Mozilla.
Installation and requirements
Official installers exist for 64-bit, ARM64 and 32-bit as EXE (NSIS). Installation asks for administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 157.0.1, released on October 6, 2026. 65 versions are listed since April 15, 2025, each with links to its own installer files. That is about 44 releases a year. The last update is less than a month 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 44 a year)
Cons
- Installation needs administrator rights
In short: Mozilla Firefox (ca) is an open-source web browser tool for 64-bit, ARM64 and 32-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Mozilla Firefox (ca) safe to download?
- The file is served by download-installer.cdn.mozilla.net; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
005043EAB6CF281FF23FDF0B46E8A15984172A4871E90CA8AB3353EADFC82A6A· Open the VirusTotal report for this hash - The link has not been checked yet
- 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 65 versions ›65 versions over 1 year · about 44 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 157.0.1Latest | October 6, 2026 | — | 32-bit EXE (NSIS)ARM64 EXE (NSIS)64-bit EXE (NSIS) |
| 157.0 | September 29, 2026 | — | ARM64 EXE (NSIS)64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 156.0.1 | September 22, 2026 | — | 32-bit EXE (NSIS)ARM64 EXE (NSIS)64-bit EXE (NSIS) |
| 156.0 | September 15, 2026 | — | ARM64 EXE (NSIS)32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 155.0.1 | September 4, 2026 | — | ARM64 EXE (NSIS)32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 155.0 | September 1, 2026 | — | 64-bit EXE (NSIS)ARM64 EXE (NSIS)32-bit EXE (NSIS) |
| 154.0.1 | August 25, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS)ARM64 EXE (NSIS) |
| 154.0 | August 18, 2026 | — | 32-bit EXE (NSIS)ARM64 EXE (NSIS)64-bit EXE (NSIS) |
Release cycle and support
Version 157.0.1 belongs to the 157 release line, which reached its end of life on October 13, 2026: it no longer receives security updates.
| Release line | Released | Support ends | Latest version | Status |
|---|---|---|---|---|
| 158 | October 13, 2026 | October 27, 2026 | 158.0.1 | Supported |
| 157 | September 29, 2026 | October 13, 2026 | 157.0.1 | End of life |
| 156 | September 15, 2026 | September 29, 2026 | 156.0.1 | End of life |
| 155 | September 1, 2026 | September 15, 2026 | 155.0.1 | End of life |
| 154 | August 18, 2026 | September 1, 2026 | 154.0.1 | End of life |
| 153 (ESR)LTS | July 21, 2026 | not announced | 153.5.1 | Supported |
| 152 | June 16, 2026 | July 21, 2026 | 152.0.6 | End of life |
| 151 | May 18, 2026 | June 16, 2026 | 151.0.4 | End of life |
Install from the command line
Silent install ›winget install --id Mozilla.Firefox.ca -e"Firefox Setup 157.0.1.exe" /S /PreventRebootRequired=trueRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask firefoxInformation
- Publisher
- Mozilla
- Category
- Web browsers
- Licence
- MPL-2.0
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64, 32-bit
- Installer
- EXE (NSIS)
- Version
- 157.0.1
- Released
- October 6, 2026
- Added to the catalogue
- April 30, 2025
- Versions listed
- 65
- Updates / year
- 44
- Website
- mozilla.org
- winget ID
- Mozilla.Firefox.ca
File types it opens (9)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Mozilla Firefox (ca)
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Frequently asked questions
Is Mozilla Firefox (ca) free?
Yes. Mozilla Firefox (ca) is open-source software under the MPL-2.0 licence.
Is Mozilla Firefox (ca) safe to download?
The download comes from download-installer.cdn.mozilla.net; 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 Mozilla Firefox (ca) 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 Mozilla Firefox (ca) be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Mozilla Firefox (ca) run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of Mozilla Firefox (ca)?
The versions page lists all 65 versions with links to their official installer files, back to April 15, 2025.
What are alternatives to Mozilla Firefox (ca)?
Brave, Waterfox, LibreWolf, qutebrowser and Safari. The alternatives page compares them.
