Good option for quick starts, Very popular in open source community. If you want to start something in the morning and want to close by night, nothing beats vue. Need to wait and see how enterprises accept vue.
Long waited recurrenceRule feature is in, this makes the library complete.
This would be out of scope for library but having an API to generate repeat rules will be great add on to this. Currently we need to build using 3rd party generators
One of the best and top React Components library, Almost all my react projects uses material-ui.
With everyday gaining popularity today its the top React Components library. Tons of support and Components to starts with.