I started with WO on NeXT in 1998, it was a amazing way to build web applications (in the pre-JS days). There are still WO apps in use today. The biggest benefi

I started with WO on NeXT in 1998, it was a amazing way to build web applications (in the pre-JS days). There are still WO apps in use today. The biggest benefit was Enterprise Objects, which Core Data is based on today on iOS, which made messing with big databases pretty easy. It was written in Objective-C at the time which was pretty oddball, but at Apple it eventually moved to Java and then become less supported as Apple clearly had other priorities. But WO was a lot of fun to work with even on large projects.