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.

Calcohol - Need to dilute alcohol? How fast water start to boiling?

Appyet - Create stunning Android apps.

SwiftUI - SwiftUI is an innovative, exceptionally simple way to build user interfaces across all Apple platforms with the power of Swift.

Udemy - Online Courses - Learn Anything, On Your Schedule

B4J - 100% free development tool for cross platform desktop and server apps.