DataRobot also does some automated feature engineering including text mining, credibility adjustments, transformations of features, ratios and differences of numeric factors, and a bunch of other stuff, too.
As it turns out, DataRobot does nested cross-validation for model tuning to ensure that the models aren't overfit. We also automate all the out-of-sample/out-of-time validation so you can always check your holdout to be sure.