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
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.
GoodBarber - GoodBarber is a mobile app creation platform.
Android Studio - Android development environment based on IntelliJ IDEA
Fuse - Fuse is a UX tool suite for mobile app designers and developers.