Xcode 1.0 was based on Project Builder, but had an updated user interface (UI), ZeroLink, Fix & Continue, distributed build support, and Code Sense indexing.
Xcode 1.0 se bazirao na Project Builder-u, ali je imao ažuriran korisnički interfejs (GKI), ZeroLink, Fix&Continue, podršku distribucije bildovanja, i Code Sense indeksiranje.