Dart is a client-optimized programming language that is used for building reliable, high-performance web and mobile applications. It is primarily used for developing Flutter applications, which are multi-platform apps built using a single codebase.

Hello, world code example:

main() {
    var bye = 'Hello world!';

Popularity: 6.05% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.

Repositories on GitHub: 1,026,315