Keygen - A dead-simple software licensing API built for developers
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Labs64 NetLicensing - Monetize your digital products and services
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
LicenseSpring - Reliable and easy to use License-As-A-Service (LaaS) for for any software application
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.