1)   PA Server Monitor 4.0
PA Server Monitor is a Windows service that monitors the health and availability of Windows servers, network services (on Windows, Linux and other operating systems), and devices. No agents are needed to monitor remote servers. Rich reporting too.

 2)   URLy Warning 3.0
Get notified instantly when a Web Page changes. And see exactly what's changed! With URLy Warning, a pop-up window appears when a web page you're watching changes, and you'll see a visual comparison of what's been added and deleted.