Lightning Fast Graphing/Visualization, built on RRDTool

Errand provides Ruby bindings for RRD functions (via rrd-ffi), and a concise DSL for interacting with RRDs.

logtrend is an HTTP log parser built on top of event machine, generating rrd graphs of usage matching patterns you define.

HQ tool to send icinga perfdata to rrd

Gauge plugin for Observed

Graphing toolkit for RRD

This is a server which exposes data from local RRD files via a RESTful API.