macOS is a platform developed by Apple Inc. Among other things, on this platform are running browsers, applications and email clients. See below the software that is supported by macOS.

By the way, maybe you are looking for macOS user agents?

Browsers:

• Chrome
• Coc Coc Browser
• DuckDuckGo Browser
• Edge
• Firefox
• Headless Chrome
• Iridium Browser
• Iron
• Lovense Browser
• Maxthon
• Opera
• Opera Neon
• QQBrowser
• QtWebEngine
• QuickLook
• Safari
• SeaMonkey
• Seznam Browser
• Vivaldi
• Waterfox
• Whale Browser
• WhiteHat Aviator
• Yandex Browser

Applications:

• CFNetwork
• Electron
• Fluid App
• iTunes
• Steam Overlay

Email Clients:

• Apple Mail
• Postbox
• Thunderbird