Ping Monster is a freeware ping monitoring tool that comes with some alert actions including email and sound alerts and HTTP post.
The interface is an old-school green and black, reminiscent of the Matrix. You can enter numerous hosts to monitor and then follow up with multiple options.
The first two options are the interval, in seconds, between pings and how many of these attempts before an action is triggered. Now you can set it to alert you with a sound, email or even call a URL.
Any geek who's ever popped open a Command Prompt and then wish they had more options would love to have this small tool in their toolbox. It's also handy for network administrators. They say you should work smarter, not harder, and Ping Monster accomplishes this.