IP Monitor is a simple application which monitors your public IP address for changes and lets you set different kinds of notifications such as email, audio, pop up or executing a command

Internet Connection Monitor for Google Chrome

A neat and useful system monitor plugin (widget) for Conky

Limit VPN connections, get desktop notifications/alerts if time limit is reached

A Microsoft Windows PowerShell script demonstrating how to automate checking the network availability of a targeted system and sending an email alert if the system is unresponsive.

sf-ip-monitor extension periodically checks the external IP of current server for changes and notifies administrator about such changes.

Monitor your public IP and get notified when it changes

Real-time monitoring of multiple IP addresses

Golang daemon to monitor IP address changes and trigger executables or scripts so you can decide what should happen next