Arc users Import your Spaces before Dec 22Import on your Mac before Dec 22

The sidebar browser for Mac, iPhone and iPad.

Group your tabs into Spaces and pick them up on your other Apple devices. It’s free and needs no account.

Download the Mac beta Get the iPhone & iPad beta Get the iPhone & iPad beta

Free beta on TestFlight · See it on iPhone Duo ↓

The Kyoto Space on iPhone, with Favorites, pinned tabs and today's tabs.

Contrail on a MacBook Pro. The green Kyoto Space in the sidebar holds favorites, pinned flights and an Airbnb listing, and a Kyoto travel guide fills the rest of the window.

The full sidebar on iPhone Duo.

Unfold it and your tabs sit beside the page.

Contrail on an iPhone Duo, folded and open. Unfolded, the green Kyoto sidebar sits beside the Michelin Guide page.

Arc shuts down on December 22

Your Arc setup comes with you.

Import your Spaces, pinned tabs and history in one step.

Spaces with their colors and pinned tabs
Favorites and bookmarks
History, plus cookies if you want to stay signed in
Extensions and site permissions

Also imports from Chrome, Brave, Firefox and Safari.

Download the Mac beta

Contrail's Import from another browser window on a MacBook Pro, with Arc chosen and history, cookies, search engine and site permissions ticked.

The same Spaces on every device.

Synced through your iCloud.

The Kyoto Space on iPad with the sidebar open beside a Kyoto travel guide.

For people who never close a tab.

You don’t have to. Contrail moves unpinned tabs to the Archive after 12 hours, still a click away.

Keep work and travel in separate Spaces.

Each Space has its own tabs and color.

Pin the tabs you’ll come back to.

Everything else moves to the Archive after 12 hours.

Compare pages without switching tabs.

Up to four pages side by side.

Open a link without losing your place.

Preview a link in a floating card.

Find the tab you already have open.

Type a few letters and jump straight to it.

Browse without ads and trackers.

Built in. Nothing to install.

No account and no analytics.

Read the privacy policy →

Browsing historyStays on your devices
SyncYour own iCloud
Mac crash reportsOnly if you opt in

What’s next.

Default browser on iPhone and iPad
Open every link in Contrail.
Waiting on Apple
Passkeys
Sign in with Face ID or Touch ID instead of a password.
Waiting on Apple
Contrail 1.0
Bug fixes, then the first stable release.
In progress

Questions before you switch.

Is it really free?

Yes. Every version is free, and it shows no ads.

Does it work with my extensions?

On the Mac you can add extensions from the Chrome Web Store. On iPhone and iPad, turn them on in Contrail’s Settings › Extensions.

What is Contrail built on?

WebKit, the engine Safari uses.

Is Contrail still in beta?

Yes, it’s version 0.9. The Mac app updates itself, and the iPhone and iPad app is a public beta on TestFlight.

Who makes Contrail?

One independent developer builds and maintains it.

What happens to my tabs if Contrail stops?

They stay where they are. Your Spaces are in your own iCloud and your history is on your devices, not on a Contrail server.

Bring your tabs to Contrail.

Free on Mac, iPhone and iPad. Coming from Arc? Import before December 22.Free on Mac, iPhone and iPad. Coming from Arc? Import on your Mac before December 22.