Top Alternatives to Resource Monitor

Process Explorer is a powerful, free Windows utility from Sysinternals that provides detailed information about running processes, including DLLs loaded, handles open, and resource usage. It's a significant upgrade over the standard Windows Task Manager for advanced users and system administrators.

htop is an advanced interactive system monitor and process viewer for Unix-like systems. It offers a user-friendly, cursor-based interface to manage processes, providing real-time performance data and powerful process control capabilities.

Process Monitor is a powerful Windows utility providing real-time monitoring of file system, Registry, process, and thread activity. It's an essential tool for debugging, troubleshooting, and understanding system behavior.

Windows Task Manager is a built-in system utility providing essential information about software and processes running on your computer. It allows users to monitor performance metrics, manage applications and background processes, and gain insights into resource usage, aiding in system diagnostics and troubleshooting.

CurrPorts is a lightweight and portable network monitoring utility for Windows. It displays a comprehensive list of all active TCP/IP and UDP connections on your computer, providing detailed information about each connection.

GNOME System Monitor is a fundamental utility for the GNOME desktop environment, providing users with detailed real-time information about system performance, running processes, and resource utilization. It's an essential tool for diagnosing performance issues and managing system resources effectively.

AtMonitor was an advanced system monitoring tool for macOS, providing real-time insights into system activity, hardware usage, process performance, and network traffic. It offered both a graphical user interface and a command-line interface, catering to various user needs.

nmon is a powerful and lightweight command-line tool designed for comprehensive system monitoring and analysis on AIX and Linux systems. It provides real-time performance data across various critical areas, including CPU, memory, disk I/O, network activity, kernel statistics, and top processes, making it an essential utility for system administrators and performance analysts.