Mercury Browser

This page was last updated at: Mar 10, 2026

It aims to be the Firefox equivalent of the developer's main project: the Thorium Browser.

Mercury Browser is a web browser that runs on Desktop devices.

About Mercury Browser

Browser URL thorium.rocks/mercury
Development Status Abandoned
It hasn't been updated in a long time and might be abandoned
Launched 2022
Abandoned? 2024
Operating Systems Linux, macOS, Windows
Device platform Desktop
Rendering Engine Gecko
Fork of Firefox
Compiler optimized, private Firefox fork.
Source Code Repository