Temporarily prevent Windows from starting the screensaver or putting the display to sleep. This is useful when watching video which doesn't prevent the screensaver kicking in---like YouTube, online lectures or 4OD---or for keeping your display active when discussing something in a meeting.

The application puts an icon in your system tray which can be clicked to enable or disable the screensaver and display power-management. When the application quits, it re-enables both the screensaver and display power-management.

It is written in C# and requires Microsoft's .Net 2.0 runtime. I've tested it on both Windows XP and Vista.

It was inspired by Caffine from OS X.