https://grafana.com/ https://grafana.com/ for the graphs and https://www.draw.io/ https://www.draw.io/ and http://www.fiftythree.com/ http://www.fiftythree.com/

https://grafana.com/ https://grafana.com/ for the graphs and https://www.draw.io/ https://www.draw.io/ and http://www.fiftythree.com/ http://www.fiftythree.com/ for the diagrams.