dpkg -l | grep mysql
ii courier-authlib-mysql 0.59.3-2ubuntu1 MySQL support for the Courier authentication
rc libapache2-mod-auth-mysql 4.3.9-2.1ubuntu1 Apache 2 module for MySQL authentication
ii libdbd-mysql-perl 4.004-2 A Perl5 database interface to the MySQL data
rc libmysqlclient12 4.0.24-10ubuntu2 mysql database client library
ii libmysqlclient15-dev 5.0.45-1ubuntu3.1 MySQL database development files
ii libmysqlclient15off 5.0.45-1ubuntu3.1 MySQL database client library
ii mysql-client 5.0.45-1ubuntu3.1 MySQL database client (meta package dependin
ii mysql-client-5.0 5.0.45-1ubuntu3.1 MySQL database client binaries
ii mysql-common 5.0.45-1ubuntu3.1 MySQL database common files
iHR mysql-server-5.0 5.0.45-1ubuntu3.1 MySQL database server binaries
rc php4-mysql 4:4.4.2-1.1 MySQL module for php4
ii php5-mysql 5.2.3-1ubuntu6.3 MySQL module for php5
rc php5-mysqli 5.1.6-1ubuntu2.7 MySQL Improved module for php5
ii postfix-mysql 2.5.1-1~gutsy2 MYSQL map support for Postfix