it to delay Mac OS X Leopard. However, after Apple opened the iPhone to third-party developers, its commercial success drew attention to Mac OS X, with many iPhone software developers showing interest in Mac development.

In 2007, Mac OS X Leopard released with universal binary components, allowing installation on both Intel Macs and select PowerPC Macs. It is also the final release with PowerPC Mac support. In 2009, Mac OS X Snow Leopard