RPi-Monitor is a software designed to monitor the metrics from GNU/Linux systems and connected peripherals. It stores statistics in the local RoundRobin Database and embeds a web server allowing it to display current status and statistics.
As the name implies (Javascript RRD), javascriptRRD is a javascript library for reading RoundRobin Database (RRD) archives (produced by rrdtool) using AJAX-like techniques. The library also provides graphing classes leveraging the Flot library.