I've got a toy RethinkDB+React stack too, here's an example application: <a href="https://github.com/tinco/celluloid-rethinkdb-chat" rel="nofollow">https://github.com/tinco/celluloid-rethinkdb-chat</a><p>It's Ruby+Celluloid doing subscriptions on RethinkDB, and it uses Meteor's DDP protocol to talk to the React client side.<p>Was pretty easy to build. All the modern technologies fit really well together.<p>Unfortunately in the Ruby world live webservices like this haven't really taken off much yet, so I had to write some low-ish level things myself (The DDP server implementation, which I think is the only non-Meteor DDP server implementation out there, and the celluloid-websocket implementation, which was easy because there's a great ruby websocket library by the faye people)