HWMonitor Portable is a straightforward hardware monitoring tool that delivers real-time statistics about the performance of your PC components. Installer version and Pro version download links are also available.

CrystalDiskInfo is an Open Source utility that monitors and displays the health of your hard drive, including basic information, S.M.A.R.T. values, and disk temperature. Also available as a portable version.

CrystalDiskInfo Portable is an Open Source utility that monitors and displays the health of your hard drive, including basic information, S.M.A.R.T. values, and disk temperature. Also available as an installer.

Wireless Network Watcher is a small freeware monitoring tool that quickly scans your wireless network and then lists all the computers and devices that are currently connected.

BluetoothLEView is a specialized tool designed to monitor and display the activity of Bluetooth Low Energy (BLE) devices in your immediate vicinity.

Stats is an application that allows you to monitor your macOS system.

HWMonitor is a free hardware monitoring program that reads PC systems' primary health sensors: voltages, temperatures, and fan speeds. Portable version via PortableApps is also available.

System Monitor (Sysmon) is a Windows system service and device driver that remains resident across system reboots to monitor and log system activity to the Windows event log.

Advanced Host Monitor enables you to set up a customizable list of tasks and tests. It offers thorough monitoring options, allowing you to carefully check the network's performance and health.

PRTG - Free Network Monitor is a network monitoring solution that ensures the availability of network components while also measuring traffic and usage.

SysGauge enables you to precisely monitor in real-time your machine's performance in numerous areas.

DiskPulse gives you real-time monitoring of multiple disks and directories for unauthorized changes.

auto-cpufreq is a tool for Linux that can automatically optimize your computer's CPU speed and power consumption.

GlassWire protects your privacy and security by identifying unusual internet behavior that potentially indicates malware or privacy violations.

CPU Temp monitors CPU temperature, utilization, clock speed, power consumption, and other essential parameters in real time.

MiTeC InfoBar is a versatile monitoring tool that displays essential information about your computer and more.

EF System Monitor gives you a well-rounded tool that can be used to retrieve a permanent record of information on all your network computers; these records include; memory space, hard disk usage, date, time, and username.

Venmon is a robust real-time system resource monitoring utility that includes a multi-ping tool.

Temperature Icon Meter is a small systray icon temperature meter to keep you informed of CPU temperatures.

Homedale allows you to monitor the signal strength of multiple WLAN Access Points.

NetworkConnectLog is a simple utility that repeatedly scans your local area network (using ARP and Netbios protocols) and adds a new log line every time that a new computer or device connects to your network.

Drives Monitor utilizes performance monitor data to visualize physical or logical disk activity.

LogFusion is a powerful log monitoring tool designed to allow for easy parsing of logs, including web server and developer debug logs.

Libre Hardware Monitor is an Open Source fork of Open Hardware Monitor to monitor your computer's temperature sensors, fan speeds, voltages, load, and clock speeds.

DU Meter monitors your computer's network bandwidth usage with real-time graphs, along with the ability to create reports and alerts based on your downloads and uploads.