This is a Vue-based component library, designed for webapps in desktop-size rather than mobile-sized browsers. It's still only JS/CSS view components, nothing to do with actual desktop apps.
There are dozens of libraries like this, especially many that follow the Ant Design guidelines created by the major Chinese company Ant Financial for their own apps. Vue has a large Chinese community and is more often used in projects there, which also means the documentation might be a little wonky when translated to English.
Some other design systems and component frameworks, with varying support for mobile and corporate backing:
https://at-ui.github.io/at-ui/
https://developer.microsoft.com/en-us/fabric
https://vmware.github.io/clarity/
http://appnexus.github.io/lucid/
https://ng-lightning.github.io/ng-lightning/
http://www.jetbrains.org/ring-ui/
https://www.lightningdesignsystem.com/