Two Postman accounts or workspaces on one Mac
Keep a client's account in a second Postman on the same Mac: both open at once, each signed in to its own account, with its own notifications and Dock icon. Parallex is free and open source.
How
- Install Parallex (below). Your Postman isn't changed.
- Choose New Instance and pick Postman. Name it for what it's for, like “Postman Work”, and give it a color.
- Open it and sign in with the other account. Both run at once, each in its own windows, each with its own Dock icon.
What you get with Postman
- Its own copy of Postman, with its own Dock icon, name and color, its own notifications, and its own macOS permissions.
- Its own Library and keychain, so its sign-in, settings and caches are separate from your other Postman, and it has its own encryption key in the keychain.
- Guard keeps the copy out of the original's data, and the isolation check shows what the copy has opened of yours.
- Kept up to date by Parallex: Postman's own updater is turned off in the copy, and Parallex refreshes the copy when your Postman updates.
Tested every night
Parallex's compatibility lab makes a fresh copy of Postman 12.26.5 every night on a clean Mac and opens it. On October 1, 2026, on macOS 26.6.2, the copy ran, and nothing reached the original's data. Its copies have run clean on all 2 nights since September 30. See every app's latest result.
Good to know
- A copy can't use iCloud sync, push notifications or Sign in with Apple, which belong to the original's signature. Apps that don't use them aren't affected.
Questions
Are collections shared between them?
Not on the Mac: each copy keeps its own data. Anything synced to a Postman account follows that account.
Get Parallex
Free and open source, for macOS 14 and later. In Terminal:
curl -fsSL https://parallex.mandip.dev/install | shOr download it from GitHub, or with Homebrew: brew tap mandipadk/parallex https://github.com/mandipadk/parallex then brew install --cask parallex. Then choose New Instance, pick Postman, and give it a name.
Already have Parallex?
This opens New Instance with Postman picked; you name it and choose its color.
Make a second Postman