React Navigation: Learn once, navigate anywhere

Both React Native's internal Navigation API and community based solutions have gone through huge criticism and rewrites.
But once again, the community didn't settle, they wanted to provide a Navigation with seamless experiences on all platforms and performances out of the box.
So, there you go, Adam Miskiewicz, Satyajit Sahoo, Mateusz Zatorski, Mike Grabowski, Linton Ye are tackling this goal together.
But the list is expected to grow quickly, so you better check the contributors' list.

react-navigation on GitHub

Navigation views that deliver 60fps animations, and utilize native components to deliver a great look and feel.