React came just now. It's was officially released few weeks ago. T3 team might have started working on it's framework from quite long time ago.
Edit - Just to clarify - Reach and T3 are totally different things. T3 talks about structuring your application components for better code management. There is nothing stopping you from using both of them together.
Edit - Just to clarify - Reach and T3 are totally different things. T3 talks about structuring your application components for better code management. There is nothing stopping you from using both of them together.