Autotabla is a CGI web interface to your programs SQL tables. Just provide an XML description of your schema, and you'll be able to create/modify/delete records.
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.
myPhile is a Web application that serves as a customizable generic front-end to any MySQL table. It provides "view" control and user access privileges for editing, deleting, adding records, and more.
NG-Admin is designed for the content management of Databases, i.e. to browse, add, edit and delete data. It is somewhat similar to phpMyAdmin, but it is specialized to edit contents of the websites, not to edit the database structure. It features are very easy to use and highly tunable.
phpMoAdmin is a MongoDB GUI administration tool for PHP. It is built on a stripped-down version of the Vork PHP framework. Read more
phpMSAdmin is a tool written in PHP that allows you to administer a Microsoft SQL Server through a Web browser, without the need for Windows or the proprietary Enterprise Manager. It allows you to create and modify databases, tables, views, triggers, etc.
RockMongo is a MongoDB administration tool, written in PHP5. Read more
WizMySQLAdmin is a PHP script to manage MySQL databases.
WWWdb is a flexible web-enabled frontend and application-server for different databases.