how many computers can this software be installed on

Rapid PDF Count will show you how many pages are in many PDF's

Take A Break sits in the background and counts down how many minutes

Freq can show information regarding how many times a user has logged in

Network Inventory: track hardware and software installed on network computers

Monitor and control many network connected computers simultaneously.

It lets you specify when exactly and how long the computer can be used

It lets you specify when exactly and how long the computer can be used by kids

Eusing Free Video Converter can convert video files between many formats.

It can convert video file to many popular target formats that you want.

With FK Desktop you can create as many desktops as you wish.