WaterUI is described as 'A modern, cross-platform UI framework for Rust that renders to native platform widgets (UIKit/AppKit on Apple, Android View on Android) rather than drawing its own pixels. Build reactive, declarative UIs with Rust's type safety and performance' and is a software framework in the development category. There are more than 10 alternatives to WaterUI for a variety of platforms, including Mac, Windows, Linux, Self-Hosted and Android apps. The best WaterUI alternative is Qt, which is both free and Open Source. Other great apps like WaterUI are Flutter, React Native, Ionic Framework and Kivy.