As shared by MacRumors, the current macOS Sonoma beta allows Mac owners that use Microsoft Edge, Google Chrome, and other Chromium-based browsers to use Apple’s Password Manager for filling in passwords.
Developers and public beta testers that have macOS Sonoma installed on their Mac can use their iCloud Keychain passwords with non-Safari browsers, allowing them to autofill passwords and one-time codes. Third-party browsers can also save new passwords.
Apple now offers an iCloud Passwords Chrome extension for macOS Sonoma users, allowing them to download and install the extension to provide access to Apple passwords on Chrome or any other Chromium-based browser. An extension is also available for Microsoft Edge users.