In comparison with OS X, Mac OS 8 and 9 were tiny and simple. Installing or replacing a component was a minor task; here is how we did it.
installer
Just when most software had settled on using Apple’s Installer, along came the App Store to add to complexity. And then there’s Adobe with its own downloaders and installers again. So how should we install and update software?
I confirm the claim of the Human Interface Guidelines that I am often very annoyed, and know that something is wrong.
The Eclectic Light Company 