Cl1ckClock

Cl1ckClock is an original software that will automatically turn off your computer once a period of time has passed.

All you have to do is indicate how much time you will be working with your computer, and once that time has elapsed, the software will shut down your computer automatically.
We all have responsibilities. Some are more important and some are less. The thing is that we have to do things and sometimes we spend too much time using the computer while we could be outside seeing the world, meeting new people, hanging out with friends or just being away of a computer. I bet most of the people have once forgotten about the time running and lost the opportunity to do something they wanted to do. This software won't prevent this from happening to you, but it can help you stay off of your computer if that's what you want to by automatically turning off your computer after a previously set time has elapsed.
The software's design is pretty good and the program has a modern graphical interface.
The application is free and can be downloaded by visiting the developer's website. If you liked the software a lot, then there is an optional donation spot on the program's website, but you don't have to pay to use this nice application.