Headless test runner for running tests on Windows, Linux, and Mac

Dart DevTools for testing, debugging, and profiling your app

flutter and dart command-line tools for creating, building, testing,
and compiling your apps

Note: For more information about the Flutter SDK, see its
README file.

flutter command-line tool

The flutter CLI tool (flutter/bin/flutter) is how developers
(or IDEs on behalf of developers) interact with Flutter.

dart command-line tool

The dart CLI tool is available with the Flutter SDK at flutter/bin/dart.