TCPView - TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on...
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
TcpView For Linux - TcpView For Linux. Touch screen friendly design graphical network connections viewer for Linux.
Avira Home Gaurd - Avira Home Guard is a free home network scanner app that helps secure the smart home, detects all devices connected to your Wi-Fi and tests your internet speed.
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
Fingbox - Fingbox home network security device helps you keep your internet safe and secure, allows you to monitor your household digitally and improve your home Wi-Fi experience.