Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
ioBroker - flexible and modular application for the IoT and Smarthome
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.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation