According to Apple, its App Nap advanced technology feature in Mavericks helps you save power when you’re working with more than one app at a time. The system knows when a certain app is in the ...

When you create a new email message in OS X Maverick’s Mail app, you can choose–assuming you have more than one email account in there–which account you’re sending the email from. For example, you ...

UTM is a cross-platform emulator that allows you to run macOS, Windows, or Linux. Here's how to use it to run very old versions of Apple's Mac operating system. But there's another great free OS ...

UTM is an emulator for virtualizing other operating systems. Here's how to use it to run Apple's Mac OS 9 on a Mac running on Apple Silicon. UTM is an OS emulator that lets you virtualize and run a ...