gorm.app | Visual Interface Builder for GNUstep | Mehr ...
Gorm, the GNUstep Object Relationship Modeler, is a tool to build GUI interfaces for the GNUstep system. It is a clone of the NeXTStep "Interface Builder" app. It works well with ProjectCenter to create GUI applications for GNUstep. . You can create .nib files that also work on Mac OS X and vice versa.