phpMyAdmin is a tool intended to handle the administration of MySQL over the Web. It can create, rename, and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields, create dumps of tables and databases, export/import CSV data, and administrate one single database and multiple MySQL servers.
di is a disk information utility that displays everything that df does and more. It features the ability to display your disk usage in whatever format you prefer. It also checks the user and group quotas, so that the user sees the space available for their use, not the system wide disk space. It is designed to be highly portable across many platforms and is great for heterogenous networks.
IPplan is a Web-based, multilingual IP address management and tracking tool which simplifies the administration of your IP address space. It can handle a single network or multiple networks with overlapping address spaces. It features DNS administration, internationalization, importing of network definitions from routing tables, importing of definitions from TAB-delimited files and NMAP's XML format, support for multiple administrators with different access profiles (per group, per customer, per network, etc.), definitions of address space authority boundaries per group, finding free address space across a range, display of overlapping address spaces between networks, search capabilities, an audit log, statistics, circuit tracking, and tracking and sending SWIP/registrar information.
FSGuide is a Norton Commander clone used by many hosting firms and individuals for advanced file management through the Web. It features user management (password protection, and access control), advanced file selection dialogs, a multiple file uploader (which can also run any application after uploading), a text viewer, a binary file viewer, a source highlighting viewer, an internal text and binary editor, language support, and much more.
ezUserManager is a script that allows administration of .htpasswd files or the use of Web-based login. It features a signup form, a forgotten password form, and an admin form with the ability to modify and delete users. It offers email activation or admin approval, and supports both encrypted and plain text passwords.