Alpha for macOS and Linux

Every account,
its own space.

A minimal browser with fully isolated spaces in one window. Built on Gecko, open source, no telemetry.

Download the alpha View source

macOS 11+ on Apple silicon · Linux · Windows later

Swell with its sidebar of spaces and pinned tabs
Features

Separate lives, one window.

Each space has its own cookies, site storage, history, saved passwords, form data, extensions and permissions. No second profile, no second window.

Fully isolated spaces

Isolation across 17 stores, checked by an automated suite on every change.

A sidebar you organize

Favorites, pinned tabs and folders, plus today's tabs. Cmd+Z puts back a deleted row.

Command bar

Search, open sites and reach your tabs from the keyboard, and restore closed tabs.

Passwords per space

Passwords, addresses and cards, encrypted with a key per space in the system keychain.

Import from Arc

Bring your Arc sidebar over from its StorableSidebar.json file.

Private by default

No telemetry, no crash reporter, no accounts. Updates are never installed for you.

Two accounts, one site, side by side.

Sign in to work and personal accounts of the same site at once. Add-ons, camera, microphone and downloads stay in their space too, and deleting a space deletes everything it kept.

Install

Opening the alpha.

The alpha is for developers and curious users, and it is not signed or notarized yet. Beta builds will be signed.

You can verify the download with the checksum published next to it on the release page.

  1. Open the downloaded disk image and drag Swell to Applications.
  2. In Applications, right-click Swell and choose Open, then press Open again.
  3. If macOS still refuses, run this once in Terminal: 
    xattr -dr com.apple.quarantine /Applications/Swell.app
  1. Unpack Swell-<version>-<arch>.tar.xz where you want to keep it.
  2. Run the installer inside it to add Swell to your application menu: 
    ./install.sh
  3. Swell needs GTK 3 and, to keep saved passwords encrypted, libsecret with a keyring running. ./install.sh --uninstall removes the entry.
Status

What works, what does not.

Works today

  • Spaces, a sidebar of favorites, pinned tabs and folders
  • Command bar and import from Arc
  • Passwords, addresses and cards per space
  • Downloads, camera, microphone and add-ons per space
  • Find in page, print, spell check, developer tools

Not yet

  • Sync
  • Windows
  • Save Page As
  • A history view
  • Other languages

Found a problem? Open an issue. Security reports: see the security policy.

Catch the first swell.

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