Netflix has a pretty awesome open source library, they are worth checking out as well. https://netflix.github.io/
For those that want links:
The fact that these two companies came up with the same idea independently just reinforces how truly beneficial it must be.
I can't wait to try Om Next's implementation of this concept in my apps!
Falcor and Relay are conceptually similar but Relay is much more of a query engine, and Falcor isn't so much.
[1] https://plus.google.com/events/ca3l6qalpu0uqcce58a379006m0
AFAIK Falcor was announced just six months ago in spring 2015; I assume it is making progress towards a release. Relay wasn't based on it.