bandwhich is a terminal-based network monitoring tool that reveals exactly which processes and connections are consuming your bandwidth. It sniffs network packets and displays real-time statistics showing process names, connection counts, and bandwidth rates in an easy-to-read interface.

Key capabilities include:

Process-level monitoring: See which applications are using bandwidth and how much
Connection tracking: View active connections and their bandwidth consumption
IP and hostname resolution: Identify remote addresses and attempt reverse DNS lookups
Raw data export: Save captured network data to log files for later analysis
Cross-platform support: Runs on Linux, macOS, and Windows
Flexible output: Choose between interactive TUI or machine-friendly raw output
Customizable views: Display processes, connections, or addresses separately
DNS monitoring: Optional DNS query visibility with custom DNS server support

Perfect for system administrators and developers who need to diagnose network bottlenecks, identify unexpected bandwidth usage, or troubleshoot connectivity issues. The tool adapts to your terminal size and provides detailed insights without requiring complex configuration.

Cargo

$ cargo install --git

Features

JSON outputTrue color

Pros

Monitors network usage by process, connection, and IP in real-time
Works on Linux, macOS, and Windows
Identifies bandwidth consumption and troubleshoots network issues
Responsive to terminal window size
Attempts to resolve IPs to hostnames using reverse DNS

Cons

Requires elevated privileges on Linux and Windows for full functionality
Project is in passive maintenance, new features are not being actively developed