Back in 1998. The very first commit of KHTML is ready. To push or not to push?
https://cgit.kde.org/kdelibs.git/diff/khtml?id=4ab82c9b0f8ff9d028ce31396100995f4169de78
* The WebKit project was begun as a fork of KHTML and KJS libraries of KDE. In April 2013, Blink (the browser engine of Chrome) was created as a fork of of the WebCore of WebKit.