It’s Chromium’s non-Google cousin.

If that piques your interest, be aware that it’s mostly Apple’s baby.

And to swing back positive again, it’s open-source because Apple didn’t create it in the first place and they’re bound by GPL to keep it that way.

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Finally, a useful fun fact: WebKit GTK often comes with a MiniBrowser program that is a bare-bones web browser wrapped around the engine.

It isn’t symlinked in /usr/bin or anywhere like that, but it does work as an emergency secondary browser if something breaks your main one.

It’s usually found somewhere like /usr/lib/{OS type}/webkitgtk-{version}/MiniBrowser

On my machine it’s /usr/lib/x86_64-linux-gnu/webkit2gtk-4.1/MiniBrowser

I’ve never emerged chromium, proud waterfox user :)