Windows 10 Sets will let you group apps in tabs
 

Windows 10's interface is defined, obviously, by the eponymous "windows." It's useful sometimes to have more than one layer of compartmentalization for tasks and ideas, though. For example, you might have a web browser and a PDF reader, each with many separate tabs. Along those lines, Microsoft just announced an upcoming (and completely optional) interface paradigm for Windows 10 called Sets.

https://techreport.com/news/32890/wi...p-apps-in-tabs