Don't Sleep! is a program designed to help you prevent your Mac PC from going to sleep mode. The application sits quietly on your Menu Bar, doesn't require any system administrator experience to configure its settings accordingly, and uses a small amount of CPU resources while running.
This system utility might come in handy whenever you need to leave your PC while it's completing a given task. After enabling the Don't Sleep option (found on the main menu of the app), you can rest assure your Mac computer won't go to sleep mode and the assignments will be finished accordingly.
The app comes as an easier alternative to changing Sleep mode options from System Preferences. Don't Sleep! runs from your Menu Bar where you can change the way it works. For example, you can enable the Don't Sleep option for 5 minutes or even 4 hours.
The one thing I don't like is the fact that I can't enter the desired interval of time for the Don't Sleep option (you can only choose from a list of defined timers).
All in all, Don't Sleep! is a simple yet effective application that might prove to be of good use to many Mac users.