Open Hardware Monitor
The Open Hardware Monitor is a free open source software that monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer.
HWiNFO
Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. Free Download.
Free Windows Server Monitoring Tool
Free Windows Health Monitor helps monitor up to 20 systems/servers for CPU, Memory, Disk, bandwidth utilization, scan for open ports & Email real-time ...
Nagios
The industry standard in open source IT monitoring tools. Free, powerful monitoring and alerting for servers, networks, applications and services.
IT Monitoring and Support Tools | Licensed & Free
Explore a wide range of IT monitoring tools from SolarWinds. Enhance the performance with robust, easy-to-use software solutions. Kiwi Syslog Server Free Edition · Advanced Subnet Calculator · Engineer's Toolset
SysGauge
SysGauge is a free system and performance monitoring utility allowing one to monitor the CPU usage, memory usage, disk space usage, disk activities and ... System Monitoring Actions · Monitoring Reports · Disk Activity Monitoring · Pur
10 Free Server Monitoring Tools in 2025
Top 10 free server monitoring tools to keep your systems online · 1. Prometheus · 2. Grafana Labs · 3. Zabbix · 4. Nagios Core · 5. Icinga · 6. LibreNMS · 7. Paessler ...