Dart is a programming language developed by Google that supports building apps targeting multiple platforms, including web browsers, WebAssembly, desktop and mobile apps. Its adoption has been driven by the dominance of Flutter — a popular, multi-platform UI toolkit powered by Dart — in the cross-platform native mobile app framework space. In response to community feedback, Dart has evolved since its initial versions and has added built-in sound null safety in version three, in addition to a robust type system. Furthermore, Dart's ecosystem is growing rapidly, with a vibrant community and a wide range of available libraries and tools, making it attractive for developers.