bottom (btm) is a cross-platform monitoring app.

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

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

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

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

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

OpenNetMeter enables simple network/data usage monitoring through an Open Source app.

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

Core Temp is a compact, no-fuss, small-footprint program to monitor CPU temperature.

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.

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.

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.

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

LLDP-CDPMon allows you to capture and analyze LLDP/CDP packets that are transmitted over Ethernet connections.

HeatMon provides accurate CPU temperature monitoring capable of displaying the temperature of each CPU core using on-die sensors (DTS) and can read socket sensors if supported. Most modern Intel and AMD processors have internal sensors, making this method the most accurate for monitoring core temperatures near the CPU heat area.

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.

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

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.

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

RunCat for Windows is a portable app that illustrates CPU utilization via a running cat in the systray.

FreeMeter is designed to monitor your system performance without using too many resources.

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

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.

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.