Xamarin - Create iOS, Android and Mac apps in C#
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.
Kony - Kony is a mobile application application development platform that facilitates companies to deliver innovative mobile solutions.
Monaca - Monaca makes the hybrid mobile app development process with PhoneGap/Cordova simpler and...
FEELingK - FLK wireless internet messaging solutions.
Phunware - Phunware offers iOS & Android application development platforms.