Cubism.js is a D3 plugin for visualizing time series data in real time, and can pull data from Graphite.
Graphitejs is a jQuery plugin for easily making and displaying graphs and updating them on the fly using the Graphite URL api.
Scales is a Python server state and statistics library that can output its data to Graphite.
structured_metrics is a lightweight python library that uses plugins to read in Graphite's list of metric names and convert it into a multi-dimensional tag space of clear, sanitized targets.
txCarbonClient is a simple Twisted API for reporting metrics to Carbon.