Some packaged apps were able to take advantage of USB-connected hardware, but if Google's figures are right, it seems like not many people cared for them. You won't need to install anything to access another device, but if you want the latter, you'll need to download a new Chrome extension.
As Chrome apps reach their end of life, one of Google's most useful tools is seemingly in jeopardy. Google has started sending out emails to Chrome app developers telling them that Chrome Apps are deprecated, and while previously installed apps still work, the functionality will be stripped out of Chrome in Q1 2018.
With site isolation, Chrome can now render content for open websites in an individual process that is kept separate from other pages. Today's Chrome 63 rollout brings with it site isolation, Transport Layer Security (TLS) 1.3 for Gmail, and granular settings for extensions.
Google will replace Chrome Apps with Progressive Web Apps, this feature allows for websites to appear as traditional apps but instead be easily accessible websites. You might have already seen some of these on your mobile device: they're sites that get a full-screen immersive interface, push notifications, and an icon on your home screen.
The web giant revealed in 2016 that it planned to phase out Chrome Apps in 2018. This move comes when the company is pushing towards Progressive Web Apps.
Chrome for Android has already supported PWAs, and they aim to make the web feel like a native app.
Google says it is "roughly targeting mid-2018" for PWA desktop apps. If only 1 percent of users used Chrome Apps when it was supported on the major desktop OSes, you've got to wonder how dead and abandoned the platform will be when it is only available on Chrome OS.