Jiggler

Jiggler is a simple Menu Bar utility that helps you prevent your Mac from going to sleep mode or showing your screensaver while you're away from the computer.

The program is very easy to handle, so even users with little computer experience can easily use it on their Macs.

This application prevents your Mac from going to sleep mode by moving your mouse cursor at defined intervals of time. It proves to be of good use if you need to leave your Mac unattended while it completes a given assignment, like the installation of a large app or the download of a big file.

In the Preferences panel you will find many useful options. For instance, you can decide upon the interval of time between the "jiggles", configure the app to immediately move your mouse cursor once the overall CPU usage is over a certain value, etc.

Another useful feature is the ability to configure the app to automatically shut down after a certain amount of time.

All in all, Jiggler is an efficient Mac utility that comes with simple to configure settings and blocks your computer from going to sleep mode. What's more, it's free.