MySQL Navigator is MySQL database server client program.

You can enter query, get result set,
edit script, run script,
user add, user drop, user alter,
get client & server infomation with MySQL Navigator...

License :
GNU General Public License (GPL)

Project site :
http://sourceforge.net/projects/mysqlnavigator/

Install for Debian / Ubuntu system :
sudo apt-get install mysql-avigator

Screenshot: