Web site:
Category: Network
Subcategory: Web browsers
Platform: Linux, Windows
License: MPL
Interface: GUI
First release: January 8, 2023

Mercury – a Firefox fork with compiler optimizations and patches from Librewolf, Waterfox, and GNU IceCat.

– Compiler optimizations include AVX, AES, LTO and PGO.
– Learn more about these compiler optimizations and how they work Here.
– Patches and UI changes that enhance useability, and strengthen privacy/security.
– Many of these come from LibreWolf, Waterfox, FireDragon, PlasmaFox, and Ghostery.

This nets a 8-20% performance improvement over vanilla Firefox, depending on the benchmark and OS. See for a detailed overview of all modifications compared to vanilla Firefox regarding performance, security and useability.

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