Describe your setup, and Parallex makes the copies

How it works

1. Choose Describe Your Setup…: in New Instance, in the switcher (press ⌃⌥Space and type describe), or in the first run's “What do you juggle?” step.
2. Say what you juggle, in your own words: who you work for, which apps each needs, and anything you only need for a while.
3. Check what it suggests. Each workspace lists its copies and what each keeps to itself; remove one, or add an app. An app that isn't on your Mac is named, and nothing is made for it.
4. Press Build Everything. Each copy opens signed out, ready for its own account.

What the model does, and what it doesn't

• It reads and picks. The model turns your sentence into names, workspaces and apps, and picks only from the apps on your Mac.
• Parallex decides the rest. Whether a copy is its own app, has its own keychain or shares its settings is decided by Parallex's own code, the way New Instance decides it, never by the model.
• It stays on your Mac. It's Apple's on-device model, with no network: what you type isn't sent anywhere.

Ask in words

The switcher understands requests too. Type open my acme stuff after ⌃⌥Space and it shows what it understood, Open Acme, for you to run with Return. And a copy's page can say in plain words what the copy keeps and what it shares with the original, written on your Mac from its settings.

What it needs

Apple Intelligence, turned on, on an Apple silicon Mac with macOS 26 or later. Where it isn't available, describing and asking in words aren't offered, and the rest of Parallex works as before, on macOS 14 and later, Apple silicon and Intel. Making each copy by hand with New Instance is always there.

Without Parallex

macOS runs one copy of most apps per user, so two accounts of the same app need either a second macOS user account or a separate copy of the app. For websites alone, browser profiles are free and often enough. Work and personal apps on one Mac compares every way.