nettop

Nettop is a command-line tool available on macOS that provides real-time monitoring of network activity. It allows users to view information about network connections, processes, and their associated data transfer rates. With nettop, one can monitor both incoming and outgoing network traffic. The tool presents this information in a table format, displaying details such as process name, PID, protocol, remote and local addresses, packet counts, and connection status. Additionally, nettop highlights which connections are actively sending or receiving data. Users can also filter and sort the displayed results based on various attributes like PID, process name, or transfer rate. Nettop is a useful tool for analyzing network usage, identifying resource-intensive processes, and troubleshooting network issues on macOS systems.