This list was posted a few weeks ago, but here is a fairly definitive list of similar UI frameworks:

https://element.eleme.io/

https://ant.design/

https://quasar-framework.org/

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/

https://blueprintjs.com/

http://www.jetbrains.org/ring-ui/

https://www.lightningdesignsystem.com/

https://elastic.github.io/eui/

https://atlaskit.atlassian.com/

It offers APIs compatible with React-native (which is obviously a huge time saver for cross platform UI dev).

Its disadvantage is that it does not offer (by intent and philosophy) any components outside of React native.