MN Viewer (Mobile Network Viewer) is a lightweight framework designed for system administrators who would like to be able to monitor many aspects of their network from their mobile phone. It allows for very simple expansion using simple PHP plugins. It is designed to integrate with other monitoring tools such as Cacti.
gauger is a lightweight performance recording and monitoring tool, aimed at detecting regressions (or sudden impovements) in any measurable metric. It is mainly intended for software development, but can be used for other purposes such as network monitoring or meteorological logging. It collects measurments made by a number of clients (potentially behind firewalls) on a central server and allows you to visualize and analyze the data later. It offers a central log server, Python, Java, and C interfaces for the clients, and a Web interface to browse the data. It allows you to view graphs of the data per host or per metric, selecting the desired ranges and sizes, and allows you to download the data in a gnuplot script for further processing.
openpom is a Web interface based on NDO for Nagios or Icinga. It allows you to view almost everything about Nagios or Icinga in a single page: alert, ack, downtime, comment. You can also interact with Nagios or Icinga through ack, downtime, comment, disable, and reset buttons. You can filter on hosts and services states (such as critical, warning, unknown, ok, or outage). The status popin allows you to display graphs, either the ones from Nagios (trends.cgi) or custom ones based on RRD (such as pnp4nagios).
LibrePlan is a Web application for project planning, monitoring, and control. It is a collaborative tool to plan, monitor, and control projects and has a rich Web interface that provides a desktop-like user experience. All the team members can take part in the planning, which makes it possible to have real-time planning. It was designed for a scenario where multiple projects and resources interact to carry out the work inside a company. It makes it possible to communicate with other company tools, providing a wide set of Web services to import and export data.
Nagios 4 iPhone is a Nagios interface for the iPhone. It does not require any modifications on your Nagios servers. The server part of this software collects statistics on several Nagios servers, serves a few static files, and generates a JSON response. The client part handles the display of the data on the iPhone.