I Love Grafana
Ah Grafana how i have falling in love with the so very nice graphs of my stuff.
At work i have it pulling data from our PRTG instance in a much more flexiable way then could ever be done with out it.
The graphs i have above have been pulled via the PRTG api with a very nice http://github.com/re/PRtG-Grafana. Tho i did have to install the dev branch to have the math options to fix the way the api has the data in.
I have recently also been running telegraf as well to send metrics from our windows servers to a influxDB that grafana pull from.
So I Love Grafana