compare
Firefox vs Zen Browser
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Firefox | Zen Browser |
|---|---|---|
| Language | JavaScript | C++ |
| Licence | Other | MPL-2.0 |
| Stars | 13k | 45k |
| Latest | FIREFOX_159_0b1_BUILD1 | 1.23.2b |
| Last push | 2026-10-10 | 2026-10-10 |
| Release cadence | too few releases | about 5 days between releases |
| Active contributors | 167+ commit authors on the default branch in the last 90 days | 37 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Zen Browser replaces Firefox. Alternatives to Firefox →
PartialFirefox-based browser with vertical tabs and workspaces.
Firefox
This repository publishes tags, not GitHub releases.
Firefox
unsigned The latest release, FIREFOX_159_0b1_BUILD1, carries no signature GitHub could verify.
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Zen Browser
✓ signed The latest release, 1.23.2b, carries a signature GitHub verified.
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