Zero RRD Framework provides a central HTTP-based service for importing into standard RRD databases and for generating graphs. A lightweight, easily extendable agent for the data sources pushes updates with minimal resource consumption to the master service using HTTP. With the introduction of VMs for the service, it's easy to test-drive the application and even the architecture (connecting agents to the service in the VM).
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.
Vipaka is an update to the Karma program written by Sean Hull several years ago. Vipaka is a monitoring program along the lines of Big Brother for Oracle databases. It is able to monitor table space usage, fragmentation, hit ratios, and other information. It can also email the appropriate people to take corrective action.
DSM Lite a offers a single user login to manage email, MySQL, DNS, etc. from a single interface for an unlimited number of domains. It allows companies to offer a no-cost solution to entry level server plans, or provide Web-based management and automatic updates of critical Linux based infrastructure servers.
pmacct-fe is a frontend tool for presenting network statistics in tables and plots. It works by reading aggregates stored into a PostgreSQL database by pmacct. Features include user authentication and capabilities, support for multiple observation points, and customizable report types.
PHP System Administration Toolkit is a toolkit/framework for the rapid development of system and network administration Web interfaces in PHP. It tries to take as much common work from the developer as possible, and provides object-oriented interfaces to many common services. It aims to make the applications built using it easily customizable, extensible, and maintainable.