Virtual Qmail offers a set of applications that allow you to easily
manage virtual domains within your qmail installation. It includes a CGI
application that allows users to configure their mailboxes via the Web
(this supports plugins).
JDBC Tester is a software that allows you to prove JDBC connections and SQL statements. The central idea is to have software that is used for the design of statements and learning SQL with an easy-to-use graphical user interface.