OutSystems - Build Enterprise-Grade Apps Fast.
GoodBarber - GoodBarber is a mobile app creation platform.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Dropsource - Mobile development platform for building native iOS & Android apps
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.
Bizness Apps - Create your own app or become a reseller and build apps for others