There's the MySQL client application (I think it's called "mysql"); the company also provides other front-ends; or you could use PHP's client interfaces (the mysql, mysqli, and PDO::MySQL extensions) to you could write your own if you don't want to use existing apps like PhpMyAdmin. (I don't know which of these would be counted "good" since I don't have much to do with MySQL).
Or are you actually asking about something else? 🙂
