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Instead of Paessler PRTG Network Monitor

Paessler PRTG Network Monitor alternatives

Paessler PRTG Network Monitor tracks systems, devices, network traffic, applications, and other infrastructure metrics from an on-premises installation. Its Windows-server platform includes more than 250 preconfigured sensors, live-status dashboards, customizable alerts, scheduled reports, and distributed monitoring. It also offers an API, adaptive AI-driven anomaly detection, and webhook notifications to Slack and Microsoft Teams. Free iOS and Android apps display monitoring data and send push notifications.

1. 1 N

   Netdata

   Free plan Open source AndroidAPIiPhone+5

   Per-second infrastructure monitoring and flexible data pipelines — Netdata adds per-second metrics, logs, more than 800 collectors, and managed or air-gapped deployment options.

   Free plan · paid from $4.50/mo (annual) · 14-day trial Visit site
2. 2

   Centreon

   by Centreon

   Free plan Open source APILinuxSelf-hosted+2

   Complex cloud-to-edge infrastructure monitoring — Centreon emphasizes business-aware, AIOps-ready monitoring and offers more than 700 connectors across infrastructure and OT systems.

   Free plan · paid from €2.27 · 7-day trial Visit site
3. 3

   Checkmk

   Free plan Open source AndroidAPIiPhone+5

   Large hybrid, cloud, and data center environments — Checkmk adds more than 2,000 smart checks and built-in integrations, automatic discovery, and native AWS, Azure, and Google Cloud monitoring.

   Free plan · paid from €190/mo (annual) · 30-day trial Visit site
4. 4 G

   Glances

   Free plan Open source AndroidAPILinux+4

   Free, cross-platform system statistics and process monitoring — Glances is a free, open-source system monitor with CSV and JSON exports, database and broker outputs, and Docker and Podman monitoring.

   Free plan Visit site
5. 5

   ManageEngine OpManager

   Free plan AndroidAPIiPhone+4

   Network traffic analysis and device coverage — OpManager adds NetFlow, sFlow, J-Flow, and IPFIX analysis and supports more than 11,000 device types from over 450 vendors.

   Free plan · paid from $95 · 30-day trial Visit site
6. 6

   NetXMS

   Free plan AndroidAPILinux+4

   Distributed networks needing topology maps and OT protocols — NetXMS builds layer 2 and IP topology maps and supports protocols including MQTT, EtherNet/IP, MODBUS-TCP, and OPC UA.

   Free plan Visit site
7. 7 G

   GKrellM

   Free plan LinuxMacWindows

   Free desktop system monitoring with themes and plugins — GKrellM offers a themed stack of system monitors with configurable sensor and battery alarms and community plugins.

   Free plan Visit site
8. 8 A

   Avidemux

   Free plan Open source LinuxMacWeb+1
   9.3 Free plan Visit site
9. 9

   OSSEC

   Free plan Open source APILinuxMac+2
   8.9 Free plan · paid from $55/yr · 14-day trial Visit site
10. 10 W

    Wazuh

    Free plan Open source APILinuxMac+3
    8.5 Free plan · paid from $571/mo · 14-day trial Visit site
11. 11 A

    AIDE

    Free plan LinuxMacSelf-hosted
    7.6 Open source Visit site
12. 12

    Elastic Security

    Free plan APILinuxSelf-hosted+1
    7.6 Free plan · paid from $0.09 · 14-day trial Visit site
13. 13 E

    EventSentry File Monitoring

    Free plan LinuxMacWeb+1
    7.6 From $85 · 30-day trial Visit site
14. 14

    FIM

    Free plan LinuxMacWindows
    7.4 Free plan Visit site
15. 15 O

    Open Source Tripwire

    Free plan LinuxMacSelf-hosted+1
    7.3 Free plan Visit site
16. 16 S

    Samhain

    Free plan LinuxMacSelf-hosted+1
    6.8 Free plan Visit site
17. 17 A

    Atomic OSSEC

    Free trial LinuxMacSelf-hosted+2
    6.6 From $5/mo · 14-day trial Visit site
18. 18 W

    Wordfence Security

    Free plan Self-hostedWeb
    6.6 Free plan Visit site
19. 19 C

    CimTrak Integrity Suite

    Free trial LinuxMacSelf-hosted+2
    6.5 Pricing on request Visit site
20. 20

    CrowdStrike Falcon Surface

    Free trial LinuxMacWeb+1
    6.5 Pricing on request · 15-day trial Visit site
21. 21 M

    ManageEngine ADAudit Plus

    Free plan WebWindows
    6.5 Free plan · paid from $595 · 30-day trial Visit site
22. 22 V

    Vigil Baseline

    Free plan Linux
    6.5 Free plan Visit site
23. 23 F

    FileAudit

    Free trial AndroidiPhoneSelf-hosted+2
    6.4 Pricing on request · 30-day trial Visit site
24. 24 K

    Kaspersky Endpoint Security for Business

    Free trial AndroidAPIiPhone+5
    6.4 Pricing on request Visit site
25. 25 L

    Lepide Auditor

    Free trial AndroidiPhoneSelf-hosted+2
    6.3 Pricing on request · 20-day trial Visit site
26. 26

    PA File Sight

    Free trial AndroidAPIiPhone+4
    6.1 Free plan · paid from $49 · 30-day trial Visit site
27. 27 K

    Kaspersky Industrial CyberSecurity Platform

    Paid APILinuxSelf-hosted+2
    5.8 Pricing on request Visit site
28. 28 S

    SolarWinds Security Event Manager

    Free trial Self-hostedWebWindows
    5.8 30-day trial Visit site
29. 29 O

    OWASP Four Clover

    Free plan
    5.5 Free plan Visit site
30. 30

    Sysdig Secure

    Paid APILinuxMac+3
    5.5 Pricing on request Visit site
31. 31 T

    Tripwire Enterprise

    Paid APILinuxSelf-hosted+2
    5.4 Pricing on request Visit site

PRTG targets small and medium IT infrastructures, with features for OT and IoT, but its core runs on Windows servers. The free edition supports up to 100 sensors, and paid plans start at $200 per month billed annually. Each server accepts only one license key, and the mobile apps do not support cluster setups. When comparing alternatives, weigh deployment options, platform support, monitoring scope, and the integrations and alerting you need. Some tools emphasize per-second metrics, cloud coverage, topology maps, or detailed system statistics rather than PRTG’s broad infrastructure monitoring approach.

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