Not only was Safari always WebKit based, WebKit is Apple's browser engine (forked from KHTML and open sourced) that Chrome used to use until they forked it.
And it's a fork of the KHTML engine used by the Konqueror web browser for the KDE project
Back in 1995, Internet Explorer then was licensed after Mosaic, and for Mozilla the name was coined as 'Mosaic Killer'.
And WebKit was actually forked from KHTML which was KDE's engine.
Apple had little choice other than to Open Source Webkit unless they wanted to violate LGPL licence which forces - source code of any derivative work to be released back to the user.
Re:Safari is the new IE
by josefresco on Tuesday June 30, 2015 @11:12AM
(#9805830)
My mistake, my comment was penned rather quickly and emotionally (typical). I should have verified my memory with actual homework, the revised timeline does not change my opinion ;)
Moving to WebKit? Only if you count CyberDog, I guess. Safari was always WebKit based.
Also, your phrasing could be read as if Chrome came before Safari, but Safari is from 2003 (https://en.wikipedia.org/wiki/Safari_version_history), Chrome from 2008 (https://en.wikipedia.org/wiki/Google_Chrome_release_history).