Xamarin - Create iOS, Android and Mac apps in C#
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Kony - Kony is a mobile application application development platform that facilitates companies to deliver innovative mobile solutions.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
Monaca - Monaca makes the hybrid mobile app development process with PhoneGap/Cordova simpler and...
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.