phpLiteAdmin is a Web-based database admin tool with support for SQLite 2 and 3. It consists of a single 60KB source file that can simply be dropped into a directory on your server and then visited in a browser. There is virtually no setup required except for specifying your database(s). The available operations, feature set, interface, and user experience is comparable to phpMyAdmin for MySQL.
Wolf CMS simplifies content management by offering an elegant user interface, flexible templating per page, simple user management and permissions, and the tools necessary for file management. It is a fork of Frog CMS, which was itself a PHP migration of the Ruby-on-Rails app Radiant CMS. Wolf is now forging its own development path, although a family resemblance with these two systems can still be seen.
SUMO Access Manager is a security system for PHP Web applications that can be added using only one line of code. Administrators can manage authentication and authorization for users, groups, and security policies with easy, all through an intuitive Web based interface. You can create users that can authenticate their password via LDAP, MySQL internal users, MySQL/PostgreSQL/Oracle generic users tables, and via Google Mail account.