phpSysInfo is a customizable PHP script that parses various files in /proc and displays them. It will display information about system facts like Uptime, CPU, Memory, SCSI, IDE, PCI, Ethernet, Floppy, and Video. It now has full internationalization support along with customizable templates.
Web server (apache2) with php4 or later support
Phpsysinfo Supported platforms
For installation of apache2 with php4 support check here
Installing phpsysinfo in Ubuntu
sudo apt-get install phpsysinfo
After completion of your installation this program automatically located at apache2 default document root directory i.e /var/www/phpsysinfo/ folder
If you want to access this from your web browser type the following
You should see the following screen with all your server details
Is there a similar tool but for Windows?