gyro

https://github.com/NijiDigital/gyro

This tools allows you to use the visual Xcode editor to design your DataModels using the xcdatamodel format (originally designed for CoreData) but then generate the code for Realm.io models for Swift, Java & ObjC from that xcdatamodel. This way you can take advantage of the xcdatamodel visual editor and Xcode integration while using Realm instead of CoreData.