In what world are these apps non-invasive? The kind of things they're intended to do are inherently invasive.<p>Also, I really don't like this scenario:<p>> Paul needed to turn off Gatekeeper to install an app he found on the Internet, then failed to turn it back on again, and his Mac got infected with malware.<p>Just turning off Gatekeeper can't result in your Mac getting infected. You'd also need to choose to run a malicious program. Think of it this way: Linux doesn't have any equivalent to Gatekeeper, but it's not less secure than macOS is.