Hi Joe Doliner, engineer at RethinkDB here. We've talked a lot about having support for an ODM. It will be happening but it's one of many things we want to add so I'm not certain of a timeline yet. I think the main thing we've discussed is an Active Record plugin. I'm not terribly well versed in the various ODMs that are out there and I'd be interested to know which ones you think are good and why if you wouldn't mind. It will help us in designing one that is awesome.