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Kort vs Zen

Zen is an open-source Firefox fork with a sidebar, workspaces and a compact mode. It runs on Mac, Windows and Linux, and has no mobile app.

Kort adds 11 things
you don't get in Zen.

Side by sideKortZen

Apple's WebKit engineYesNo
Kort:
WebKit, Apple's engine (the same as Safari)
Zen:
Gecko (Firefox) Source, 2026-11-01
Ad blocker, built in and onYesNot confirmed
Kort:
Built in and on by default. Blocked inside WebKit before the request is sent. No extension needed
Zen:
Not confirmed. Last seen: No built-in ad blocker; Firefox tracking protection Source, 2026-11-01
Cookie pop-ups answeredYesNot confirmed
Kort:
Answered for you: "Reject all" or "Only necessary", or hidden
Zen:
Not confirmed. Last seen: Not confirmed Source, 2026-11-01
No usage data sentYesYes
Kort:
None. Crash reports only if you choose to e-mail them
Zen:
Firefox telemetry removed, per its privacy policy Source, 2026-11-01
No account neededYesYes
Kort:
None. No sign-in
Zen:
Not required. Optional Firefox Sync Source, 2026-11-01
No AI in the browserYesYes
Kort:
No AI. Google's AI Overviews hidden by default
Zen:
None advertised Source, 2026-11-01
Vertical tabs and SpacesYesYes
Kort:
Vertical sidebar, Spaces, split view with up to four pages on Mac
Zen:
Sidebar tabs, Workspaces, Essentials, split view, compact mode Source, 2026-11-01
iPhone and iPad appComingNo
Kort:
Mac. iPhone and iPad coming to the App Store
Zen:
Mac, Windows, Linux. No mobile app planned Source, 2026-11-01
Made in the EUYesNot confirmed
Kort:
Made in the EU
Zen:
Zen Team, a community project Source, 2026-11-01

Yes
Partly or opt-in
No
Not confirmed
Coming

What Kort adds

YesApple's WebKit, the engine in Safari
YesNative Mac app, written in Swift
YesBuilt-in ad and tracker blocker
YesCookie pop-ups answered for you
YesAI Overviews hidden in search
YesLock a Space with Touch ID
YesSettings per Space
YesSite Styles: restyle any site
YesPrivate windows lock with Touch ID
YesPay once, no subscription
YesImport from Zen in one step
ComingiPhone and iPad appComing

Both Kort and Zen

Tabs in a sidebar
Workspaces in Zen, Spaces in Kort
Essentials and pinned tabs
Split view with up to four pages, in a grid too
Glance
No account needed
No AI

Kort

5 €$5£4.99CHF 559 kr59 kr39 kr22,99 zł129 Kč2 490 Ft

Once. No subscription, no ads.

Zen

Free

Donations

Switching from Zen

One step brings over your Spaces, Essentials, folders, bookmarks and history.

Questions

Kort looks like Zen. Is it a fork?

No. Kort is written in Swift on WebKit. Zen is built on Firefox. The sidebar idea is shared.

Why WebKit instead of Firefox?

WebKit is Apple's own engine, patched with macOS and tuned for battery life on Apple silicon.

Can I bring my Zen setup?

Yes. On the Mac, Kort imports your Zen Spaces, Essentials, folders, bookmarks and history in one step.

Every fact, word for wordChecked 2026-11-01

Kort and Zen, feature by feature
	Kort	Zen
Engine on Mac	WebKit, Apple's engine (the same as Safari)	Gecko (Firefox)
Platforms	Mac. iPhone and iPad coming to the App Store	Mac, Windows, Linux. No mobile app planned
Made by	Made in the EU	Zen Team, a community project
Price and business model	5 €$5£4.99CHF 559 kr59 kr39 kr22,99 zł129 Kč2 490 Ft once, no subscription. One license per iCloud account.	Free, donations
Ad and tracker blocking	Built in and on by default. Blocked inside WebKit before the request is sent. No extension needed	Not confirmed. Last seen: No built-in ad blocker; Firefox tracking protection
Cookie pop-ups	Answered for you: "Reject all" or "Only necessary", or hidden	Not confirmed. Last seen: Not confirmed
Usage data	None. Crash reports only if you choose to e-mail them	Firefox telemetry removed, per its privacy policy
Account	None. No sign-in	Not required. Optional Firefox Sync
AI features	No AI. Google's AI Overviews hidden by default	None advertised
Vertical tabs and spaces	Vertical sidebar, Spaces, split view with up to four pages on Mac	Sidebar tabs, Workspaces, Essentials, split view, compact mode

Facts about Zen checked on 2026-11-01.

Sources4 links

github.com/zen-browser/desktopas of 2026-11-01
zen-browser.app/downloadas of 2026-11-01
zen-browser.appas of 2026-11-01
zen-browser.app/privacy-policyas of 2026-11-01

We describe other browsers from their own pages, help centers, app store listings and press coverage. Products change. If something here is out of date, write to us and we will fix it.

Other comparisons

Try Kort on your Mac

5 €$5£4.99CHF 559 kr59 kr39 kr22,99 zł129 Kč2 490 Ft, once. No subscription. macOS 15.4 or later. iPhone and iPad: coming to the app store.

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