CurrPorts - Portable TCP IP UDP Port Monitor

What is CurrPorts? CurrPorts is a free portable network monitoring tool that displays all open TCP/IP and UDP ports on your computer. It shows which processes opened the ports, when they were created, and which user owns them. You can also close unwanted connections and kill suspicious processes directly from the tool.

CurrPorts Portable Port Monitor

CurrPorts portable port monitor showing open TCP and UDP ports

Similar to TCPView, this Network Monitor is also offered as a lightweight, standalone executable (no installation required) for monitoring network activity in real time. It is especially useful for system administrators, IT professionals, and security-conscious users who need to track network traffic or detect suspicious activity.

Key Features of CurrPorts

  • Displays all currently opened TCP/IP and UDP ports on your local machine.
  • Shows detailed information about each process: name, path, version, and creation time.
  • Identifies the user that created the process.
  • Lets you close unwanted TCP connections.
  • Option to kill processes that opened a port.
  • Export port information to HTML, XML, CSV, or text files for analysis.
  • Fully portable – runs from USB without installation.

Additional Specifications

  • Developer: NirSoft
  • First Release: February 5, 2004
  • Latest Version: See project page
  • Supported OS: Windows
  • License: Freeware (not open source)
  • Download: Get CurrPorts here

Summary

CurrPorts is a lightweight, portable tool that lets you monitor all open TCP/IP and UDP ports on your Windows PC. It provides detailed information about the processes using these ports and allows you to close unwanted connections or kill suspicious processes. Portable and easy to use, it is ideal for system administrators, security conscious users, and anyone who wants a free real time network monitoring tool.