Search engine is very powerful tool but not just for search but also for beginner hacking. Some mysqladmin web tools are indexed with google which make them available for search. By searching with keywords:
“phpMyAdmin” “running on” inurl:”main.php” site:com
“phpMyAdmin” “running on” inurl:”main.php” site:org
or
“phpMyAdmin” “running on” inurl:”main.php” site:net
etc.
we can get a results for all google indexed mysqladmin. Since not all of them are secured by the password you can get lucky and find some which are free to use.