Yes, ExtReact plays well and works with Redux. If you’re using Redux, you’re in luck because we have a lot of good examples using Redux with ExtReact. For example, our Kitchen Sink examples use Redux, and the ExtReact Conference Example uses Redux in addition to React Grabber. You can read this recent article on our blog, Using ExtReact Stores in Flux Apps, that dives into a couple of different ways you can use the Ext JS data package and store with Redux. It also includes how the two should be oriented with respect to one another. We have great support for Redux, but you can use ExtReact with any implementation of Flux.