Download CurrPorts

CurrPorts is a free, portable network monitoring utility for Windows that displays a detailed list of all currently open TCP and UDP ports on your computer, along with information about the process that opened each connection. It is an essential tool for diagnosing network activity, detecting unauthorized connections, and troubleshooting connectivity issues.

For each network connection, CurrPorts shows the local and remote IP address, port number, connection state, process name, process ID, and the full path to the executable. Suspicious or unwanted connections can be closed directly from the interface with a single click.

Lightweight, portable, and requiring no installation, CurrPorts is a must-have utility for security-conscious users and IT professionals who want real-time visibility into all active network connections on a Windows system.

Key Features

• Displays all open TCP and UDP ports with full connection details
• Shows process name, PID, and executable path for each connection
• Close any selected connection or kill the associated process instantly
• Filter connections by process, port range, IP address, or state
• Export connection data to HTML, CSV, or tab-delimited text files
• Color-highlight suspicious connections for quick identification
• Portable — no installation required, runs from a single executable

How to Install

1. Click the download button above to get the CurrPorts archive.
2. Extract the ZIP file to any folder or USB drive.
3. Run cports.exe directly — no installation needed.
4. The list of active network connections will populate automatically.
5. Right-click any connection to close it, kill its process, or copy its details.