You can find the DMGs or XIPs for Xcode and other development tools on (requires Apple ID to login). You must login to have a valid session before downloading anything below.(Newest on top. For each minor version (6.3, 5.1, etc.) only the latest revision is kept in the list.) Xcode 10. Xcode 9.

Xcode 5 1 For Mac Os X

Xcode 5 1 For Mac 10.10

(Last version supporting OS X 10.12.6 Sierra). Xcode 8. (Last version supporting OS X 10.11.5 El Capitan). Xcode 7. (Last version supporting OS X 10.10 Yosemite). Xcode 6. (Last version supporting OS X 10.9.5 Mavericks).

Even Older Versions (unsupported for iTunes Connect).