The App Brewery - Turn your app idea into reality.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Udemy - Online Courses - Learn Anything, On Your Schedule
Appyet - Create stunning Android apps.
Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
SwiftUI - SwiftUI is an innovative, exceptionally simple way to build user interfaces across all Apple platforms with the power of Swift.