What are these things?

What exactly is a Dart?

Dart is an Object Oriented Programming (OOP) language developed and supported by Google for the development of both server and client side apps.

Dart can run on the web, as a standalone application on your command line interface, or as self-contained, native executable code.

What exactly is Flutter?

Flutter is a framework built on the Dart programming language that allows us to develop multi-platform client side applications for Android, iOS, Web, Desktop, and Mac from a single codebase.

Flutter is a powerful open source UI framework in the realm of application development.