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Zen Browser is a compelling independent Arc alternative if you want a Firefox-based browser organized around workspaces, a sidebar, and split views. It is not a confirmed one-for-one replacement: Zen is still in beta, and its documented Arc import covers Spaces and Profiles rather than every item in an Arc account. If you want the original maker’s supported transition, consider Dia instead. Arc for macOS and Windows is scheduled to stop working on December 22, 2026.
What is Zen Browser, and why might Arc users consider it?
Zen is an open-source browser built on Firefox. Its project repository describes it as a Firefox-based browser focused on productivity and lists the Mozilla Public License 2.0. That makes a move from Arc a change not only in interface but also in browser engine and project ownership. Zen’s project repository
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Zen’s appeal to Arc users is its workspace-centered approach. Its official feature page highlights Workspaces, Compact Mode, Glance, and Split View—features that support organizing browser activity by project and keeping a persistent workspace visible. This is a meaningful workflow resemblance, not evidence of pixel-perfect Arc parity. Zen’s feature overview
What happens to Arc, and is Zen the official successor?
No. The Browser Company says Arc is scheduled to sunset on December 22, 2026, and identifies Dia as its replacement. The company’s notice says Arc for macOS and Windows will stop working on that date, Arc accounts will be deactivated, and personal data will be deleted within 30 days. Readers who want the original maker’s supported migration path should look at Dia; Zen is an independent alternative. The Browser Company’s Arc sunset notice
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According to that notice, Dia retains concepts such as vertical tabs in the Sidebar, Spaces renamed Profiles, Pinned Tabs, Folders, and Split View. The company also says Arc users can import passwords, history, tabs, Profiles, Folders, bookmarks, and extensions into Dia on macOS and Windows. Zen’s documented importer is narrower, so the two options should not be treated as equivalent migration routes.
Can I import Arc Spaces into Zen?
Zen added an importer for Spaces and Profiles from Arc and Dia in its v1.24b release on October 28, 2026. Update Zen before attempting the migration. The release note establishes that this importer exists; it does not establish that every Arc item or feature transfers. Zen’s release notes
- Install or update Zen. Confirm that the release is v1.24b or later; the current release notes list v1.24.2b, dated November 11, 2026.
- Find the import option in Zen. Use the browser’s available import flow and select the Arc or Dia Space/Profile import if it is offered in your build. The release note confirms the importer, but the available evidence does not establish a specific menu path.
- Check the result before relying on it. Verify that the workspaces and profiles you need are present. Separately check passwords, history, bookmarks, extensions, pinned tabs, folders, and any Arc-specific customizations; do not assume they came across.
- Keep Arc available during the transition, if possible. Confirm that essential information is preserved elsewhere before the announced sunset date. The Browser Company says Arc accounts will be deactivated and personal data deleted within 30 days after the shutdown.
Zen’s release log also says that v1.22b added synchronization of Spaces, Folders, Tabs, and more through a Mozilla account. Later entries record fixes related to cross-device tab-sync loss, so treat sync as an evolving feature: check the current release notes and verify that important tabs appear on your devices. Zen’s release notes
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Which Arc workflows does Zen offer?
Zen has several features that map to the way Arc users may organize browsing, but names and broad purposes are not proof that the implementations behave identically.
| Arc user need | Zen feature | What to expect |
|---|---|---|
| Separate browsing by project or context | Workspaces | Zen presents Workspaces as a way to keep distinct contexts, such as work, research, and personal browsing. The official information does not provide a complete Arc-to-Zen parity map. |
| Reduce visible browser controls | Compact Mode | Zen lists this as a way to reduce browser chrome when focus matters. Check whether its layout suits your screen and habits. |
| Preview a link without fully switching tasks | Glance | Zen offers a preview-oriented link workflow. It should not be assumed to match Arc Peek exactly. |
| View pages side by side | Split View | Zen documents Split View as a dedicated feature. The available official documentation does not establish a maximum pane count. |
| Customize the browser | Boosts | Zen’s release notes describe improvements to Boosts and sharing. This is Zen’s own customization feature, not proof of compatibility with Arc Boosts. |
Zen documents Split View on its official feature page. Because the available documentation does not confirm a pane maximum, avoid relying on a specific number of simultaneous views without checking the current build.
Does Zen Browser work on Windows and Linux?
Yes. Zen’s official download page lists macOS, Windows, and Linux. It also labels the browser as currently in beta, which matters if you need a mature, predictable work setup or dependable support. Check the download page for current builds and platform availability before installing. Zen’s download page
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The latest release listed in the official notes is Zen v1.24.2b, released November 11, 2026, and updated to Firefox 160.0. The active release log includes security fixes, performance fixes, and feature changes, so version-specific behavior can change. These details describe the listed release; they are not a guarantee of comparative speed, stability, battery life, or memory use. Zen’s release notes
Should I switch from Arc to Zen or Dia?
Choose based on what you need to preserve. Zen is the better fit to investigate if you want an independent, Firefox-based browser with workspaces and a sidebar-oriented productivity approach, and you are comfortable with beta software and checking what transferred. Dia is the more direct option if you want the Arc maker’s supported transition and its stated import path for a broader set of Arc data.
| Decision factor | Zen Browser | Dia |
|---|---|---|
| Project and engine | Independent, open-source, Firefox-based project | Made by The Browser Company, Arc’s maker |
| Documented Arc migration | v1.24b added Arc and Dia Spaces and Profiles import | The company says Arc users can import passwords, history, tabs, Profiles, Folders, bookmarks, and extensions |
| Platforms stated in the sources | macOS, Windows, and Linux | The Arc notice describes Dia for macOS and Windows |
| Maturity and support posture | Official download page labels Zen beta | The Browser Company says Dia is replacing Arc and that its security and engineering focus is moving to Dia |
The comparison reflects what the projects and company have documented; it is not a hands-on performance comparison. The available information does not establish which browser is faster, more stable, more private in practice, or more compatible with a particular extension or site.
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Is Zen Browser the best Arc replacement?
Zen may be the best match for an Arc user whose priority is an independent, Firefox-based browser with a workspace-oriented interface—not necessarily the best choice for everyone. Its documented Arc importer is limited to Spaces and Profiles, and its beta status makes it sensible to verify essential workflows before depending on it.
If your priority is continuity with the original Arc team and the broader import described in its notice, Dia is the clearer route. If your priority is a different browser project, broader operating-system coverage, or Firefox as the underlying browser, Zen is worth evaluating. The official claims available here do not support declaring either browser universally superior.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Is Zen Browser based on Firefox?
Yes. Zen’s project repository describes it as Firefox-based, and its November 11, 2026 release notes list an update to Firefox 160.0. That makes it a different browser-engine choice from Arc, not simply a reskinned Arc installation.
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Does Zen Browser have Arc-style split view?
Zen lists Split View as a dedicated feature, so it can address the side-by-side browsing need. The official material cited here does not confirm a maximum number of panes or exact behavioral parity with Arc.
Will Arc still work after December 22, 2026?
The Browser Company says Arc for macOS and Windows will stop working on December 22, 2026. It also says accounts will be deactivated and personal data deleted within 30 days, so users should treat the announced date as a migration deadline.
Does Zen Browser work on Linux?
Yes. Zen’s official download page lists Linux alongside macOS and Windows. The same page labels Zen as beta, so confirm current build availability and test any essential work tools before relying on it.
