Basilisk is a free and Open Source XUL-based web browser, featuring the well-known Firefox-style interface and operation. It is based on the Goanna layout and rendering engine (a fork of Gecko) and builds on the Unified XUL Platform (UXP), which in turn is a fork of the Mozilla code base without Servo or Rust.
Publisher’s description
What is Basilisk?
Basilisk by Basilisk Development Team is open-source Windows software in the web browsers category.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit and 32-bit Windows. The main installer is 45.8 MB. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 52.9.2026.09.24, released on September 24, 2026. The version history goes back to February 20, 2025: 10 releases, all linked to the official files. That is about 6.3 releases a year.
Popularity and file types
On Windows it registers 5 file types, including .html, .xhtml, .htm, .shtml and .xht. Similar programs include Brave, Waterfox and qutebrowser.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Frequent updates (about 6.3 a year)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Basilisk is an open-source web browser tool for 64-bit and 32-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Basilisk safe to download?
- The file is served by dl.basilisk-browser.org, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
AA82E18D93CDDDEF7AB11DC826C2560309EF0B7D2020B51DA69D538EBC84E48F· Open the VirusTotal report for this hash - The link answered 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 10 versions ›10 versions over 2 years · about 6.3 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 52.9.2026.09.24Latest | September 24, 2026 | 45.8 MB | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 52.9.2026.06.12 | June 14, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 52.9.2026.04.15 | April 16, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 52.9.2026.03.09 | March 9, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 52.9.2026.01.23 | January 23, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 52.9.2025.10.10 | October 10, 2025 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 52.9.2025.07.04 | July 4, 2025 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 52.9.2025.06.13 | June 13, 2025 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Basilisk.Basilisk -escoop install extras/basiliskbasilisk-20260922233924.win64.installer.exe /S /PreventRebootRequired=trueRelated guide: How to use winget: install and update apps
Information
- Publisher
- Basilisk Development Team
- Category
- Web browsers
- Licence
- MPL-2.0
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- EXE (NSIS)
- Version
- 52.9.2026.09.24
- Released
- September 24, 2026
- Added to the catalogue
- March 7, 2025
- Versions listed
- 10
- Updates / year
- 6.3
- Website
- basilisk-browser.org
- winget ID
- Basilisk.Basilisk
- Scoop package
- extras/basilisk
File types it opens (5)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Basilisk
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Frequently asked questions
Is Basilisk free?
Yes. Basilisk is open-source software under the MPL-2.0 licence.
Is Basilisk safe to download?
The download comes from dl.basilisk-browser.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 Basilisk 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 Basilisk be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Basilisk run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
Where can I download an older version of Basilisk?
The versions page lists all 10 versions with links to their official installer files, back to February 20, 2025.
What are alternatives to Basilisk?
Brave, Waterfox, qutebrowser, Safari and LibreWolf. The alternatives page compares them.
