Password manager (optional, off by default; Settings > Passwords). Logins are stored in your login Keychain on this Mac and nowhere else. A browser extension offers to save a login after you submit a sign-in form and fills it in from the toolbar popup or with Ctrl+Shift+P; an on-screen picker is available from the app as well. Nothing is collected or sent anywhere: the extension talks to the app on the same computer (native messaging for Chrome, Vivaldi, Brave and Firefox, a loopback-only connection for Safari).
Import from a CSV or Bitwarden JSON export (Passwords, Bitwarden, 1Password, Chrome) and export of the whole vault as CSV. Export always asks for Touch ID or the Mac password and saves through the app's save dialog.
The extensions ship inside the app: Settings > Passwords > "Show extension folder" opens the chrome, firefox and safari folders. The Safari app is signed with a Developer ID certificate and notarized by Apple.
