You can find the .dmg for Xcode and other development tools on https://developer.apple.com/downloads/ which requires Apple ID to login.
Compatible Mac OS for Xcode Installation: Apple Xcode software is compatible and supported with following macOS versions. Mac OS X 10.10+ Yosemite; Mac OS X 10.11+ El Capitan; macOS 10.12+ Sierra; macOS 10.13+ High Sierra; macOS 10.14+ Mojave; macOS 10.15+ Catalina; macOS 11+ Big Sur or latest version; How to Download Xcode DMG Installer Manually? All downloads are hosted by Apple. Links on this site take you directly to Appleās download pages. This is not an official Apple website. Please consider donating to help maintain it. Looking for an API? Xcode Download and Install for your computer - either Windows PC 10, 8 or 7 and macOS 10 X, 32/64-bit processor, we have you covered. How do I download Xcode 9 on a mac running 10.11.6 (El Capitan)? Ask Question Asked 1 year, 8 months ago. Active 6 months ago. Viewed 9k times 1. I am taking a course on programming with flutter, and it needs Xcode 9 or higher. The latest Xcode you can install on OS X 10.11.6 is Xcode8 (version 8.2.1). The latest macOS High Sierra 10.13.6 Beta (Build 17G31f) and Xcode Beta is now available for free download and offline installation using iTunes. The Official Direct Download Links of macOS High Sierra 10.13.6 Beta DMG / PKG and Xcode Beta DMG / PKG Update and Config Profile Files are.
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8.2.1 (Last version supporting OS X 10.11.5 El Capitan) : https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_8.2.1/Xcode_8.2.1.xip
7.2.1(Last version supporting OS X 10.10 Yosemite): https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.2.1./Xcode_7.2.1.dmg