AppyPie AppMakr - AppMakr is a browser-based platform designed to make creating your own iPhone app quick and easy.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Bizness Apps - Create your own app or become a reseller and build apps for others
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
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.