Tobias Oetiker

The OpenSource industry standard, high performance data logging and graphing system for time series data. Use it to write your custom monitoring shell scripts or create whole applications using its Perl, Python, Ruby, TCL or PHP bindings. RRD is the acronym for Round Robin Database. It is a ... [More] system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average). [Less]

Deluxe latency measurement system with nice web display and alerts.

Extopus is an aggregating frontend to monitoring systems. Its plug-in architecture provides an easy route to integrating output from a wide array of monitoring systems into a single instance of Extopus.