https://www.paessler.com/Download_PRTG/30_Day_Trial
AdCheck bandwidth consumption, network traffic, error messages of all your routers with PRTG. PRTG uses SNMP, Packet Sniffer and NetFlow/sflow/jFlow. Predefined or custom sensors.
All in one, no add-ons · All in one dashboard · All-in-one monitoring · ISO 9001 Certified
Types: PRTG Network Monitor, PRTG Enterprise Monitor, PRTG Hosted Monitor