https://www.paessler.com/Download_PRTG/PRTG_Freeware
赞助PRTG monitors the entire network: speed, traffic, uptime, servers, routers, switches, etc. SNMP, packet sniffing, WMI, NetFlow etc. More than 200 predefined sensors. All-in-one.
All in one dashboard · Easy and fast setup · Trusted by Fortune 400 · All-in-one monitoring
Service catalog: Network Monitoring, Bandwidth Monitoring, Server Monitoring