Marble

Firefox ESR fork that restores the Photon interface and native styles removed from recent versions.

Facts

Developer

Erizur (NetworkNeighborhood)

Website

github.com

Engine

Gecko

Derived from

Mozilla Firefox

Current platforms

WindowsLinux

Former platforms

macOS

Details

Windows and Linux (G2 generation, Oct. 2026); macOS only for the G1 generation (G1.1, June 2025)

Popularity

14/100 — ≈57 GitHub stars

Key versions

1. June 23, 2025
   G1.1First release published on GitHub.[1]
2. June 18, 2026
   G2-b1New major version.[2]
3. Oct. 30, 2026
   G2.0Latest release published on GitHub.[3]

Version sources: [1] Erizur/Marble (GitHub), [2] Erizur/Marble (GitHub), [3] Erizur/Marble (GitHub) · 4 releases published · Full history → · Milestones taken automatically from the releases published on GitHub.

Sources

1. https://github.com/Erizur/Marble
2. https://github.com/Erizur/Marble/releases