Safari 14, released on November 12, 2020, is the current macOS revision based in macOS Big Sur, and was also available for macOS Catalina. The software was currently supported on macOS, iOS, proceeding against a former Windows version offered from 2007 to 2012. It was first introduced on Mac OS X Panther in 2003, and was later incorporated to the iPhone and iPod Touch with iPhone OS 1 in 2007. Safari is a graphical web browser developed by Apple Inc., based primarily on open-source software properties notably including WebKit.