Basilisk
With Basilisk you can use a desktop browser with a classic interface and the Goanna engine, separate from Chromium.
Developer Basilisk Development Team
Version 2026.09.24 · Open source · Windows · macOS · Linux
Looking for an alternative to Basilisk?Compare Firefox, Pale Moon.Compare alternativesBasilisk is a browser based on the Unified XUL Platform and the Goanna engine. The operation is consistent with classic Firefox versions, with recognizable menus and extended settings. The project is not a current Firefox release, nor does it use the Chromy base on which many other browsers support.
This distinction is particularly relevant for extensions and websites. You can't assume that a modern Firefox or Chrome extension works in Basilisk. Also, a web service that only supports recent versions of the largest browsers can display or refuse parts differently. Therefore, check your bank, video services and work portals before setting the browser as default.
Basilisk is interesting when you are looking for the classic operation and the associated ecosystem. For those who want to use modern web apps especially without a search, the smaller compatibility margin weighs more. Save a current second browser for websites that are not working properly.
Compare Basilisk with alternatives
Looking for an alternative? See what the other apps can do and check whether they support your device.
| Software | What can it do? | Platform and licence |
|---|---|---|
| BasiliskYou are viewing this app | With Basilisk you can use a desktop browser with a classic interface and the Goanna engine, separate from Chromium. | Windows, macOS, LinuxOpen source |
| FirefoxView this alternative | You want a wider supported browser with your own engine. | Windows, macOS, LinuxMPL-2.0 |
| Pale MoonView this alternative | You are also looking for a classic Goanna-based browser. | Windows, macOS, LinuxOpen source |
Choose an alternative to explore its features, system requirements and download options.
Who is it for?
Getting started
Privacy
Good to know
Please note
Advantages
- Classic Menu & Operation A different engine than Chromy Extended setting options
Things to consider
- Not every modern website works completely Limited offer of appropriate extensions Needs more control with daily use
Download Basilisk
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Provider’s website · www.basilisk-browser.org
Version history
2026.09.24 Security
You get wider CSS support and stricter processing of websites and media files.
- Support for CSS:has(), revert-layer, replaceSync and adoptedStyleSheets has been added.
- The browser checks memory limits, fonts, animations and invalid video files more strictly.
- Audio with a sample frequency below 8 kHz is refused to avoid processing problems. Memory cleanup and website compatibility have been improved.
2026.06.12
You get improvements to modern CSS functions and JavaScript compatibility.
- You get improvements to modern CSS functions and JavaScript compatibility.
- The AV1 decoder dav1d and security components have been updated.
- There are corrections for WebAudio and website processing.
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