macOS Catalina is an operating system developed by Apple for its line of Mac computers. Released in October 2019, it introduced several new features, including the ability to use iPad apps directly on a Mac through a feature called Project Catalyst. This made it easier for users to access a wider range of applications. Another significant change in macOS Catalina was the separation of iTunes into three distinct apps: Apple Music, Apple Podcasts, and Apple TV. This allowed for a more streamlined experience when managing media. Additionally, Catalina enhanced security and privacy features, giving users more control over their data.