https://medium.com/better-programming/5-awesome-react-js-libraries-you-should-know-about-ef0274fe4a56	

1. react-portal	
2. react-toastify	
3. react-contextmenu	
4. react-lazy-load-image-component	
5. react-onclickoutside	

One more (react-virtualized):-	
https://bvaughn.github.io/react-virtualized/#/components/List	
This is used for rendering long list of data, to include only those elements in dom tree that are in viewport. AddOn might have use for this.		