LibreWolf is a privacy-focused, open-source web browser designed to be a secure and private version of Firefox.
TenFourFox was a specialized web browser designed to run on older, PowerPC-based Apple Macintosh computers
Swiftfox was a optimized version of Mozilla Firefox specifically for Linux, designed for one purpose: raw speed.
FireDragon is a performance-optimized, privacy-hardened web browser for Linux, specifically designed for the Garuda Linux distribution.
Firefox Focus is a streamlined, privacy-focused mobile browser designed for automatic, single-session browsing
Catalyst is a niche, independent web browser for Windows, developed by a single programmer, César Claudio Lóriga González. It has been in active development since around 2016.
The project was eventually abandoned, its website shut down, and it is now considered obsolete and unsafe to use. It is remembered as a charming but unsuccessful experiment in browser design.
Blue Hawk is a highly specialized, niche web browser focused on maximum security, now considered obsolete and unsafe
Polypane is a specialized, premium web browser built specifically for web developers and designers
NetSurf is a free, open-source web browser designed to be fast, lightweight, and highly standards-compliant, particularly for legacy and embedded systems
BriskBard is a niche, independent browser that prioritizes performance, customization, and privacy, born from one developer's ambitious technical project
Agregore is an experimental browser for developers and explorers building a user-owned web where content is shared directly between devices