This article shows how to change the default apps used to open files in macOS 10.15. This alteration is meant to give these duties to other Mac apps of your liking. So, Apple allows you to change the default apps used to open files in macOS 10.15. However, it is not a must that you use these applications when you have other alternatives. These set default apps on macOS 10.15 are meant to automatically open web links, audio files and emails respectively, when need arises. Mac is ready for use due to its pre-installed applications, like Safari, iTunes and Mail. You can change all your macOS 10.15 default apps, if there are others that you like more. MacOS comes with default applications that enable you to do various activities automatically, such as open emails, browse and listen to audio files. Microsoft Excel for macOS 10.14 Crashes.Numbers File Can’t Be Open on macOS 10.14.Can’t Open Keynote Files on macOS 10.14.macOS 10.14 Update Not Showing on App Store.Alternatives to Adobe Acrobat for macOS 10.14.Mac Won’t Wake from Sleep on mac OS 10.14.Black Screen after Upgrade to macOS 10.14.Time Machine Stuck on Preparing Backup in macOS 10.14.Apps Freeze or Quit Unexpectedly on macOS 10.14.Merge and Remove Duplicate Contacts on macOS 10.14.Remove and Rearrange Menu Bar Icons on macOS 10.14.Download YouTube Videos Free on macOS 10.14.Edit Photos with Preview in macOS 10.14.Method to Back Up Data on Mac before Updating into 10.14.