dbMan is a complex SQL monitor for common database systems (PgSQL, Oracle, MySQL etc.). It's based on Perl and DBI interfaces. Features include a command history buffer, tab completion, editing Oracle objects, simultaneous connections, SQL help, importing and exporting of tables, Oracle explain plan, and more. dbMan is made as a simple kernel and many extension modules, and you can make your modules with a simple HOWTO.
Perl XSQL is a simple creator of XML data from DBI datasources. It allows you to easily extract data from a database, and manipulate it later using XML::Parser or in association with a XSL template file to a XSLT parser like Sablotron or GNOME libxml. This allows you to create dynamic Web applications by simply setting your SQL queries into a XML file and generating the HTML output using a XSL template. It acts exactly like the Oracle XSQL servlet.
mydns_admin is a simple but functional Web interface for the MyDNS DNS server. It allows you to add and edit zones and resource records from a browser. Lightweight and simple, the interface has very few dependencies and consists of only two files - the CGI and an HTML template. The template allows complete customization of the interface without changing the CGI.
innotop is a MySQL and InnoDB monitor that lets you view and manage what's happening inside your MySQL servers. Features include a top-like query list, a top-like InnoDB transaction list, and much more. This tool gives you a high level of insight into the inner workings of InnoDB.
Oracle client is a simplistic Perl-based Oracle client that tries to mimic some of the functionality of PostgreSQL and MySQL's text-based SQL clients. It is relatively simplistic, but much more useful than dbishell or sqlplus. It supports readline, history, desc, and various shorthand commands like \d, \t, \c, etc.
Cruddy! is an instant CRUD Web front-end, featuring auto-discovery of the data dictionary. It is similar to phpMyAdmin in the plug-and-play manner, but much more user-friendly for staff and clients with access restrictions. Unlike phpMyAdmin, Cruddy!'s underlying CGI::CRUD is a full object-oriented webapp development framework. Currently, Oracle and MySQL RDBMS are supported. Cruddy! is stable and used in several production sites around the world including ValueClick, Inc.