Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
Bots UI Kit - Fully customizable Sketch UI Kit for Messenger Platform
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.
Landing UI Kit - Handcrafted UI components for landing pages