Honestly? My favorite is using it as my Authenticator/2FA app. I pull up a website, 1Password fills in the user-name/password, and then when the 2FA field opens, it fills that in as well.Serious question: How is 1Password different than macOS's built-in password features (macOS offers synced keychain, 2FA, and password notes).
What features does 1Password offer that I'm not already getting?
Edit: Not counting cross-platform compatibility. Does it offer any other features macOS lacks?