File Extension XCODEPROJ File Format Xcode Project XCODEPROJ stands for Xcode Project. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question Xcode error message when uploading app on iOS 8 Change the name of an iOS app How can I change the name of an iOS application?