GFI Network Server Monitor 

Checks your network & servers for failures and fixes them automatically, before your network users notice them! Alerts can be sent by email, pager or SMS. You can reboot a machine, restart a service or run a script, batch job or executable.
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Host Evaluator 

Finally there is a way that you can analyze web hosts before you pull out your credit card and make the move. With the Host Evaluator software you can add the web hosting plans you want to compare, and test out the servers of web hosting companies.
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CleverEye 

Clear, simple, and effective web based tool for availability control and response time monitoring. (This can be standalone or accompany Sysload or other tools)CleverEye suite allows you to monitor availability and response time of any application.
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