Free Uptime Status Monitoring
For SMB Company with few servers and network devices that can easily count by finger, you can know quickly if one of device has a problem. But if you are big company with a lot of servers, network devices and have several branches with server and router too, or a hosting provider, data center with many infrastructure, you need something that can easily monitor the uptime of those servers and network devices.
Free PHP Uptime Status Monitoring
The guys from SillyDNS, has made a free and open source script to monitor service uptime for servers and network devices. It called Statusmon. The script is based on PHP/MySQL which you can download to your server and run the monitoring service for yourself.
You can easily add more servers and network devices, you can even add another service to monitor, and choose what service is the primary service for that device. You also can have email alert if a service is down.
It came with nice interface (you can see the screenshot), after you configure what device and service need to monitor, you need to add a cronjob for the script to check automatically. Statusmon even has an uptime archive for previous month.
The minus things are (perhaps it only me): I can’t install the script using the installer, the admin area not so intuitive, I have to click several submit/update button when I add/edit/delete some variables, and Statusmon support forum not very actice.
Other than that, this free and open source script, it’s very easy and enough for me and team to let us know which servers or network devices that down as soon as possible. Well I need to check email to know if there is alert from statusmon, but luckily although I don’t have Blackberry, my Manager has it, so he will be the first person to know 
