Peak is a project mainly written in JavaScript, it's free.
Visualization and event correlation of RRD files
This README isn't ready yet
To run in development:
shotgun -P lib/peak-app/public
apt-get install librrd-dev
brew install rrdtool
look sexy
render using canvas
alternate rasterizer for mobile devices
modern tooling (coffeescript, scss, ruby)
easily organize graphs
filter to find easily