The App Brewery - Turn your app idea into reality.
Xojo - Real Software and Real Studio are now Xojo.
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.
FreeBASIC - FreeBASIC is a completely free, open-source, 32-bit BASIC compiler, with syntax similar to...
Appyet - Create stunning Android apps.
PowerBASIC - PowerBASIC, formerly Turbo Basic, is the brand of several commercial compilers by PowerBASIC Inc.