FREEDOM251

Freedom251 › Cloud, Backup & PC

Free and open first

Best Hardware monitoring tools in 2026 — page 2

  1. 26

    Glassmkr

    Free plan APILinuxSelf-hosted

    Glassmkr offers server and hardware monitoring with useful alert context and several notification options.

    7.1 Free plan Visit site
  2. 27

    ManageEngine OpManager

    Free plan AndroidAPIiPhone+4

    OpManager brings infrastructure metrics, traffic analysis, alerts, and troubleshooting into one self-hosted product.

    7.1 Free plan · paid from $95 · 30-day trial Visit site
  3. 28

    michka

    Free plan LinuxSelf-hostedWeb+1

    Michka offers local, offline monitoring with a multi-machine setup and customizable dashboard. Windows users should note the stated limitation on CPU temperature readings.

    7.1 Free plan Visit site
  4. 29

    Nagios XI

    Free plan APILinuxMac+3

    Nagios XI offers self-hosted monitoring, a limited free edition, and perpetual paid licenses priced by node count.

    7.1 From $4,995 · 30-day trial Visit site
  5. 30

    NetXMS

    Free plan AndroidAPILinux+4

    NetXMS combines discovery, topology maps, protocol support, and distributed monitoring in an open-source solution.

    7.1 Free plan Visit site
  6. 31

    Observium

    Free plan APILinuxSelf-hosted+1

    Observium offers a free Community edition and paid editions with additional alerting, traffic accounting, or support features.

    7.1 Free plan · paid from £250/yr Visit site
  7. 32

    Sidebar Diagnostics

    Free plan Windows

    Sidebar Diagnostics provides a customizable desktop view of several hardware metrics on listed Windows versions.

    7.0 Free plan Visit site
  8. 33

    BatteryCare

    Free plan Windows

    BatteryCare brings battery monitoring, temperature readings, and power controls to Windows laptops at no cost.

    7.0 Free plan Visit site
  9. 34

    IPMI Monitor

    Free plan LinuxSelf-hostedWeb

    IPMI Monitor brings sensor, event, power, and SSH log data together with alerting and remote controls. The free plan is limited to basic monitoring; paid plans list server and token limits.

    7.0 Free plan · paid from $100/mo Visit site
  10. 35

    Munin

    Free plan APILinuxSelf-hosted

    Choose Munin if you want free, self-hosted resource monitoring with graphing, a broad plugin ecosystem, and configurable alerts.

    7.0 Open source Visit site
  11. 36

    OpenNMS

    Free plan APILinuxSelf-hosted+1

    OpenNMS covers network monitoring across local and remote environments, with Horizon and Meridian serving different release and subscription needs.

    7.0 Free plan Visit site
  12. 37

    Paessler PRTG Network Monitor

    Free plan AndroidAPIiPhone+5

    PRTG combines on-premises infrastructure monitoring with alerts, reports, dashboards, and an API. Check sensor needs and the single-license-per-server limit when choosing a plan.

    7.0 Free plan · paid from $200/mo (annual) · 30-day trial Visit site
  13. 38

    Prometheus Node Exporter

    Free plan APILinuxMac+2

    Node Exporter provides configurable host metrics for Prometheus, with documented package, Ansible, and container deployment options.

    7.0 Open source Visit site
  14. 39

    HWall

    Free plan APILinux

    HWall combines Linux sensor monitoring, hardware inventory, alerting, and export features in read-only interfaces.

    6.9 Free plan Visit site
  15. 40

    AccuBattery

    by AccuBattery
    Free plan Android

    AccuBattery brings battery estimates, live readings and session history together, with a charge alarm and a free tier.

    6.9 Free plan Visit site
  16. 41

    GSam Battery Monitor

    by GSam Battery Monitor
    Free plan Android

    GSam Battery Monitor provides detailed Android battery breakdowns, estimates, charts, widgets, and alerts.

    6.9 Free plan Visit site
  17. 42

    BatteryBar

    Free plan Windows

    BatteryBar provides taskbar battery monitoring and estimated remaining time, with Pro adding alerts and configuration options.

    6.9 Free plan Visit site
  18. 43

    BatteryBot Pro

    by BatteryBot Pro
    Free plan Android

    BatteryBot Pro combines status-bar monitoring with alarms, widgets, detailed logs, and exports.

  19. 44

    SSD Fan Control

    Free plan Mac

    SSD Fan Control offers focused fan management for affected iMac hardware, including manual and SMART modes.

    6.9 Free plan Visit site
  20. 45

    Heimdall

    Free plan APILinuxMac+2

    Heimdall provides free fleet monitoring with terminal dashboards, metric backends, alerts, and scriptable diagnostics.

    6.9 Free plan Visit site
  21. 46

    HWMonitor

    Free plan AndroidWindows

    HWMonitor covers a broad set of PC sensors, with a free Windows x86/x64 plan and a separate ARM64 download. Remote monitoring and additional PRO features are available at listed one-time prices.

    6.9 Free plan Visit site
  22. 47

    Site24x7 Hardware Monitoring

    Free plan AndroidAPIiPhone+5

    Site24x7 combines broad hardware coverage with dashboards, integrations, alert channels, and remediation automation.

    6.9 From $9/mo (annual) · 30-day trial Visit site
  23. 48

    Zabbix

    Free plan APILinuxMac+3

    Zabbix covers a broad range of monitoring sources and methods, with synthetic browser checks and a free plan. Subscription support and server or proxy allowances vary by tier.

    6.9 Free plan · paid from $50/mo · 5-day trial Visit site
  24. 49

    siomon

    Free plan Linux

    siomon combines live sensor monitoring with broad one-shot hardware reporting and multiple export formats.

    6.7 Free plan Visit site
  25. 50

    Open Hardware Monitor

    Free plan LinuxWindows

    Open Hardware Monitor offers broad sensor coverage and several display options at no cost. Its Beta status, older listed release, and platform prerequisites should be considered before installation.

    6.7 Free plan Visit site