Ping Pong 1.2.3

Ping Pong is an application which continuously checks if the specified remote hosts are available. It notifies you if they are down, as well as if they are up again. You can select how often you want "ping" to happen, and choose the method of notification (visual, voice, email, etc.).

If you need to monitor a busy server which doesn't always respond in time you can specify the number of lost packets which is tolerable.