> Safari only exist on Apple devices

Webkit, at least, builds on a lot more platforms than you think. Take a look at https://build.webkit.org/#/builders

I'm seeing at least three other MAJOR platforms:

  • GTK-Linux-64-bit-Release-Build
  • PlayStation-Release-Build
  • Windows-64-bit-Release-Build

And just a tip, if you don't have any Apple devices but need to test a bug/inconsistency being reported by Safari users, you can usually use GNOME Web (Epiphany) and the same behavior will usually manifest, since it is a true Webkit browser. It also includes the Web Inspector with the exact same interface as Safari. And it's not super outdated or anything like that, it tracks Webkit quite well nowadays.

It's a bit ironic that Webkit started as KHTML, a component of KDE, but eventually made its way to GNOME when a Gecko-based Epiphany became hard to maintain.

WebKit 100% exists on Windows and Linux, Microsoft builds it under the playwright project.

I use it occasionally, only for debugging purposes though.