Basilisk

Name: Basilisk
Brand: Basilisk

A lightweight, non‑Chromium browser built for stability and control

softwareDesktop Browsersbrowseropen-sourcelegacy-support

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Our Verdict

Best for

Power users who need legacy extensions and low‑resource browsing

Skip if

Users requiring latest web standards or mobile browser support

What is Basilisk?

Basilisk is a desktop web browser that continues the legacy of the classic Firefox engine while avoiding Chromium dependencies. It targets users who need long‑term compatibility, extensive customization, and reliable performance across platforms. The browser offers a familiar XUL‑based interface, support for legacy extensions, and a portable mode that lets you run it from a USB stick without installation. Its focus on stability makes it a solid choice for developers, power users, and anyone who prefers a non‑Chromium browsing experience.

SpecificationsAI-estimated

deploymentDesktop App

open source✅ Yes

api available✅ Yes

support optionsEmail, community forum

Key Features of Basilisk

Runs on the classic Gecko engine, providing compatibility with older web standards and extensions.

Supports legacy XUL and XPCOM extensions that are no longer available in modern browsers.

Offers a portable version that can be executed from a USB drive without installation.

Includes a built‑in developer console and advanced debugging tools for web developers.

Provides per‑site permission controls and built‑in tracking protection.

Implements multi‑process architecture to keep tabs isolated and improve stability.

Allows extensive UI customization through userChrome.css and userContent.css files.

Features a lightweight footprint, making it suitable for older hardware and low‑resource systems.

Use Cases for Basilisk

Legacy Web App Access

Run older web applications that rely on deprecated Firefox extensions.

Portable Browsing

Carry a fully functional browser on a USB stick for secure, on‑the‑go use.

Developer Testing

Test websites against a non‑Chromium engine to catch compatibility issues.

Privacy‑Focused Surfing

Browse with built‑in tracking protection and fine‑grained site permissions.

Pros & Cons of Basilisk

Pros

Free and open source
Supports legacy extensions
Portable version available
Low system resource usage

Cons

Limited extension ecosystem compared to Chrome/Firefox
Occasional compatibility issues with very new web standards
No official mobile versions

Frequently Asked Questions

Is Basilisk still actively maintained?

Updates are released periodically, focusing on security patches and compatibility fixes.

Can I install Chrome extensions in Basilisk?

No, Basilisk uses the older XUL/XPCOM extension model and does not support Chrome Web Store extensions.

Does Basilisk have a built‑in ad blocker?

It includes basic tracking protection, but for full ad‑blocking you can add compatible extensions.

Is there a way to sync bookmarks across devices?

Basilisk does not provide native sync; users can use third‑party services or manually export/import bookmarks.

Pricing Overview

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Free

Detailed plans are not listed. Visit the official website for pricing information.

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