A small utility that prevents sleep or hibernate mode, keeping your computer awake with simulated mouse input at regular intervals, designed for Windows users.
Caffeine for Windows is a free application that helps prevent your Windows computer from automatically going into sleep, hibernate or screen saver mode when you don't want it to. It's useful for situations where you need to keep your computer awake for long periods of time without having to constantly jiggle your mouse or press keys.
The app runs minimized in your system tray. With a simple click you can toggle Caffeine on or off. When enabled, it will simulate mouse input every minute, tricking your computer into thinking you're still actively using it. This overrides your normal power settings and prevents your screen and computer from powering down.
Caffeine is very lightweight and uses barely any system resources. It's completely portable and leaves no entries in the registry. It can be installed or run directly from a USB drive. As it doesn't need to be installed, it's very easy to use on any shared or temporary computer where you don't have admin access.
The app is open source and available for free. It works on all versions of Windows. If you often need to keep your computer awake, Caffeine for Windows provides a simple solution without having to modify your system settings.
Here are some alternatives to Caffeine for Windows:
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