Safari 1.0

Apple introduced its own web browser, Safari 1.0 . The browser uses the WebKit  renderer to display website content. Safari 1.0 was initially available for download as a standalone program, but, in October 2003, it became the default Mac OS X 10.3 operating system browser.

2003/06/23

https://www.livescience.com/20727-internet-history.html