Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Rider - Rider is a cross-platform .NET IDE based on the IntelliJ platform and ReSharper.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Qt Creator - Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment. It is the fastest, easiest and most fun experience a C++ developer could wish for.
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.