In MySQL, you can get list of user account with user details. Just execute following Query of PHPMySQL/SQL Yog/Other MySQL Tools.
List of MySQL users.
List of MySQL unique users.
List of MySQL users with password and host.List of MySQL users.
SELECT User FROM mysql.user
List of MySQL unique users.
select distinct User from mysql.user;
SELECT Host,User, Password FROM mysql.user
List of MySQL unique Users with password and host.
SELECT Host,User, Password FROM mysql.user group by User
List of MySQL users with all permissions.
SELECT * FROM mysql.user WHERE 1