Safari is using WebKit. WebKit started as a fork of the KHTML and KJS libraries from KDE and has since been further developed by KDE contributors, Apple, Google, Nokia, Bitstream, BlackBerry, Sony, Igalia and others.
On April 3, 2013, Google announced that it had forked WebCore, a component of WebKit, to be used in future versions of Google Chrome, under the name Blink.
Source: Wikipedia
Safari is using WebKit. WebKit started as a fork of the KHTML and KJS libraries from KDE and has since been further developed by KDE contributors, Apple, Google, Nokia, Bitstream, BlackBerry, Sony, Igalia and others. On April 3, 2013, Google announced that it had forked WebCore, a component of WebKit, to be used in future versions of Google Chrome, under the name Blink. Source: Wikipedia
so its been awhile since they have been together.