|Search type||Search syntax|
|For more details on advanced search visit our help page|
OS X is the desktop operating system from Apple Inc. It was the successor to Mac OS 9 and here the 'X' means 10. OS X is based upon the NeXTSTEP/OPENSTEP OSes developed in the 1980s and 1990s by NeXT Inc., which Apple purchased in 1996.