Best Network Monitoring in 2026
Updated
Keeping a network observable means deciding what signals matter and how your team wants to respond when something needs attention. Compared on alert channels and deployment, these monitoring tools also differ across device limits, topology maps, and traffic monitoring. Synthetic checks add another point to consider when assessing what to monitor. Free-plan availability and paid-from pricing can help frame the cost comparison. Centreon, Obkio, and ManageEngine OpManager are among the options to assess against your environment, the devices and traffic you need to watch, and the alerting approach your team can use.
Network Monitoring, one module each.A lit port is something its maker publishes; 25 of 25 with a known API signal have a public API.
- 01 Centreon API yesFREE yesDOCS 7.4€0.19/mo
- 02 Obkio API yesFREE yesDOCS 7.4Free
- 03 ManageEngine OpManager API yesFREE yesDOCS 7.3$7.92/mo
- 04 NetXMS API yesFREE yesDOCS 7.3Free
- 05 ntopng API yesFREE yesDOCS 7.3Free
- 06 Observium API yesFREE yesDOCS 7.3Free
- 07 OpenNMS API yesFREE yesDOCS 7.3$500/mo
- 08 Paessler PRTG Network Monitor API yesFREE yesDOCS 7.3$16.67/mo
- 09 WhatsUp Gold API yesFREE yesDOCS 7.3$72.17/mo
- 10 Checkmk API yesFREE yesDOCS 7.2$275/mo
- 11 Fing Security API yesFREE yesDOCS 7.2$5.83/mo
- 12 LibreNMS API yesFREE yesDOCS 7.2Free
- 13 WhatsUp Gold API yesFREE yesDOCS 7.2Free
- 14 Catchpoint Internet Performance Monitoring API yesDOCS 6.9
- 15 Domotz API yesDOCS 6.9$1.50/mo
- 16 FastNetMon API yesDOCS 6.9$60/mo
- 17 Intermapper API yesDOCS 6.8
- 18 Site24x7 Network Monitoring API yesDOCS 6.8$42/mo
- 19 Zabbix API yesDOCS 6.8
- 20 Kentik Network Monitoring System API yesFREE noDOCS 6.7$166.67/mo
- 21 NetCrunch API yesDOCS 6.7
- 22 Plixer Scrutinizer API yesFREE noDOCS 6.7$90.25/mo
- 23 ExtraHop RevealX API yesDOCS 6.6
- 24 LogicMonitor API yesFREE noDOCS 6.6$16/mo
- 25 Progress Flowmon API yesDOCS 6.6
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Synthetic checks | Device limit |
|---|---|---|---|---|---|---|---|---|
| 1 | Centreon | 7.4 | Free plan | €0.19/mo | Yes | Yes | 125 devices | |
| 2 | Obkio | 7.4 | Free plan | Free | Yes | Yes | ||
| 3 | ManageEngine OpManager | 7.3 | Free plan | $7.92/mo | Yes | 10 devices | ||
| 4 | NetXMS | 7.3 | Free plan | Free | Yes | Yes | ||
| 5 | ntopng | 7.3 | Free plan | Free | Yes | Yes | ||
| 6 | Observium | 7.3 | Free plan | Free | Yes | Yes | ||
| 7 | OpenNMS | 7.3 | Free plan | $500/mo | Yes | Yes | ||
| 8 | Paessler PRTG Network Monitor | 7.3 | Free plan | $16.67/mo | Yes | 200 /mo | No | 50 devices |
| 9 | WhatsUp Gold | 7.3 | $72.17/mo | Yes | ||||
| 10 | Checkmk | 7.2 | Free plan | $275/mo | Yes | |||
| 11 | Fing Security | 7.2 | Free plan | $5.83/mo | Yes | |||
| 12 | LibreNMS | 7.2 | Free plan | Free | Yes | Yes | ||
| 13 | WhatsUp Gold | 7.2 | Free plan | Free | Yes | Yes | 50 devices | |
| 14 | Catchpoint Internet Performance Monitoring | 6.9 | Yes | |||||
| 15 | Domotz | 6.9 | $1.50/mo | Yes | 1.5 /mo | Yes | ||
| 16 | FastNetMon | 6.9 | $60/mo | Yes | 115 /mo | |||
| 17 | Intermapper | 6.8 | Yes | Yes | ||||
| 18 | Site24x7 Network Monitoring | 6.8 | $42/mo | 42 /mo | Yes | 10 devices | ||
| 19 | Zabbix | 6.8 | Yes | 50 /mo | ||||
| 20 | Kentik Network Monitoring System | 6.7 | No | $166.67/mo | No | 2,000 /mo | Yes | |
| 21 | NetCrunch | 6.7 | No | Yes | ||||
| 22 | Plixer Scrutinizer | 6.7 | No | $90.25/mo | No | |||
| 23 | ExtraHop RevealX | 6.6 | ||||||
| 24 | LogicMonitor | 6.6 | No | $16/mo | No | 16 /mo | ||
| 25 | Progress Flowmon | 6.6 |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.