Nassau is a Free and Portable Network Connection Viewer Utility created by run.to/sz. It can be used to View, List, or Display All Network Connections and starts minimized to the taskbar. Connection information such as the IP, Gateway, and DNS server of each Network Adapter is listed in a structured window for the listed user/computer.
Connection Monitor is a free, standalone portable utility that lets you monitor inbound and outbound socket connections in real time. By showing exactly which network and internet connections are active, it helps you better understand and secure your system.
This lightweight tool scans current connections and displays detailed information including local and remote addresses, ports, protocol type (TCP or UDP), and connection status. It is especially useful for troubleshooting network activity or identifying unknown connections.
TCPView is a lightweight and portable Windows network monitoring tool that provides a comprehensive real time overview of all active TCP and UDP network connections on your system. Developed by Microsoft’s trusted Sysinternals team, it displays detailed connection data along with the exact process names responsible for each network endpoint.
Compared to the built in Windows Netstat utility, TCPView delivers significantly more insight through a clean graphical interface. For command line users, it also includes a console based companion called Tcpvcon, which offers equivalent functionality without a GUI.