Caffeine

What could be better than a little caffeine to keep your computer from going to sleep, dimming the screen, or starting the screensaver?

This is the purpose of Caffeine, a small tool for Mac that keeps your computer awake so that your system won't disconnect.

Caffeine runs silently from the menu bar. An icon displaying 'Zzz' will remind you that your computer will be awake so long as it is activated.

Click the application's icon to deactivate it. If you click the icon and press the command button at the same time, you can access a small menu that will display information about the version of the application as well as its author.