WebObjects is/was NeXT's web application development framework. Think of it as being like the iPhone SDK for the Web (http://en.wikipedia.org/wiki/WebObjects).
Interestingly, back in the 90s WebObjects was programmed using Objective C. In 2000, Apple (post-NeXT acquisition) overhauled WO to use Java. This was around the same time that the Cocoa/Java bridge was released for building native Cocoa apps in Java.
WebObjects seems to be on life support inside Apple today. They haven't released a new version in about 20 months, and there's not much sign they'll update it any time soon.
Others have pointed out that WebObjects is an actual Apple framework for making web applications. If I'm not mistaken, Dell used to use it for their online ordering site in the late 1990s. Apple used it also for the first iTunes Store iterations (not sure what they use today). I only have a superficial understanding of WebObjects but it looked a lot like a Rails/Django style framework with Objective-C Script or Java, and about 10 years too soon.
Interestingly, back in the 90s WebObjects was programmed using Objective C. In 2000, Apple (post-NeXT acquisition) overhauled WO to use Java. This was around the same time that the Cocoa/Java bridge was released for building native Cocoa apps in Java.
WebObjects seems to be on life support inside Apple today. They haven't released a new version in about 20 months, and there's not much sign they'll update it any time soon.