Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.
Invision - Prototyping and collaboration for design teams
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.
Sketch - Professional digital design for Mac.
Rider - Rider is a cross-platform .NET IDE based on the IntelliJ platform and ReSharper.