The lines between iPad and Mac have never been blurrier – and with iPadOS 26, currently in beta and expected later this month ...

TikTok's custom in-app browser on iOS reportedly injects JavaScript code into external websites that allows TikTok to monitor "all keyboard inputs and taps" while a user is interacting with a ...

Apple's interest is more than just JavaScript, though. "SproutCore is modeled on Cocoa," says Jolley, referring to Apple's highly-regarded application development frameworks for Mac OS X.

Of course, the developer also notes that not every app that injects JavaScript code into an in-app browser does so for malicious purposes, since JavaScript is the basis of many web features.

The whole thing runs on your Mac as a single, standalone Javascript app… You can also run it on a Windows or Linux machine.

Felix Rieseberg, a senior staff engineer at Slack, has developed an app that emulates Mac OS 8. The software runs on current iterations of macOS as well ...