Thanks in a roundabout way to Google, you're about to see more apps on the Windows 10 Store. Progressive Web Apps (PWAs) are like app versions of websites that work even when you're offline and offer services like push notifications -- minus the installation fuss of regular apps. Android popularized them by letting you add them to your home screen when you load certain websites. Now, Microsoft is introducing Progressive Web Apps to the Windows 10 Store, making them "first-class app citizens in Windows," on par with Universal Windows Apps (UWAs).
Source: Microsoft
