The first batch of Windows 10 Progressive Web Apps (PWA) published by Microsoft hit the Store

[Windows Central]

Microsoft is publishing new web-apps to its Store under its name. This is the first wave of PWAs for Windows 10.
The first grouping of Microsoft-published and approved Progressive Web Apps (PWA) are now live in the Microsoft Store for those on Windows 10 build 1803 (aka Redstone 4. This batch is the first of what is expected to be hundreds of modified websites merged with Microsoft's app platform.
Microsoft has promised that PWAs will be treated as "first-class citizens" in Windows 10. That's not just programming talk either as the hybrid apps – a cross between PWA and the Universal Windows Platform (UWP) – will often be published by Microsoft themselves.

Full story from the WindowsCentral blog...