Ember FastBoot vs React Server: What are the differences?
What is React Server? Blazing fast page load and seamless transitions. React-server is a framework designed to make universal (née isomorphic) React easier to write, providing standard answers for these questions and more. When you write your app for react-server, you concentrate on your React components, and react-server takes care of everything else that's needed to run and deploy real React server-rendered apps.
Ember FastBoot and React Server are both open source tools. React Server with 3.84K GitHub stars and 210 forks on GitHub appears to be more popular than Ember FastBoot with 834 GitHub stars and 130 GitHub forks.