Unverified50% confidenceFactExact time
Zen Browser is based on Firefox's Gecko rendering engine, rather than the Chromium used by Arc.
1
Sources
50%
Confidence
Long-term
Relevance
10/25/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedFirefox uses its own Gecko engine, while Safari uses the WebKit engine; on iOS, all browsers are forced to render with WebKit.78% similarUnverifiedZen is an open-source minimalist browser based on the Firefox engine.75% similarVerifiedFirefox (Gecko) is currently the only mainstream independent browser engine maintained by a non-profit organization.74% similarUnverifiedZotero 7基于Firefox的Gecko引擎重构，插件开发框架从XUL迁移到了基于Web技术的新架构70% similarUnverifiedBrowserSkill only supports Chromium-based browsers and does not support Firefox or Safari.70% similar
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