Zen Browser: an Arc alternative?
Closest like-for-like Arc clone: Firefox-based, sidebar, Spaces, Essentials, split view.
| Vertical tabs | Yes (sidebar) |
|---|---|
| Spaces / workspaces | Yes (Workspaces/Spaces; synced via Mozilla account since v1.22, Sep 2026) |
| Profiles | Container tabs per Space; separate Firefox profiles unverified in Zen UI |
| Split view | Yes |
| DRM playback | No on Windows/macOS (no Widevine license, per Zen FAQ) |
| Sync | Yes (Firefox Sync, incl. Spaces) |
| Platforms | Windows, macOS, Linux |
| Engine | Firefox (Gecko) |
| Price | Free, open source |
How Arc concepts map
Arc Spaces -> Zen Spaces (Workspaces). Arc Favorites -> Zen Essentials. Arc pinned tabs/folders -> pinned tabs and folders in each Space. Arc Profiles -> assign a container to each Space. Arc Split View -> Zen Split View (select tabs, right-click 'Split x Tabs'). Arc Peek -> Zen Glance.
Watch out for
No DRM on Windows/macOS: Netflix, Spotify, Disney+ and similar won't play. Containers isolate cookies but not history or extensions. Chrome extensions won't install; use Firefox add-ons.