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

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

Browsers:

• ELinks
• Firefox
• Links

Bots:

• python-requests

Applications:

• Bing
• CFNetwork
• Darwin Browser
• Flipboard App
• M3Gate
• Pic Collage
• Tweetbot

Offline Browsers:

• wget