Let me clarify some things a bit. GNUstep is a libraries and set of tools for development: Makefile environment (gnustep-make), Gorm (Interface Builder) and ProjectCenter (Project Builder). NEXTSPACE's Workspace was written from scratch and has no any connection to GWorkspace. Workspace and WindowMaker is one application (binary) - it is not "repackaged GNUstep and WindowMaker". Patches for WindowMaker was a quite challenging part of Workspace development process. WindowMaker injected into Workspace minimally uses WINGs.