- Apr 12, 2001
Apple's design framework for iOS and tvOS apps, UIKit, and its development tool, Xcode, both made the list in the second quarter of 2018:
Google Cloud Platform
Google App Engine API
Upwork shared a list of relevant online courses for each skill listed, including UIKit and Xcode, for those interested in getting started.
Article Link: Workplaces Increasingly Seeking Freelancers With Xcode and UIKit Expertise