Stims

Stims is a simple application that prevents your computer from turning off accidentally, or sleeping or shutting down due to inactivity.

You can program Stims to run from 30 minutes to two days, or even permanently, if you want. It works simply by simulating pressing a shift key every minute you leave it running.

One of the best features of Stims is its small size (it's much smaller than an image). This means that you can easily take it with you on a USB drive and run it anywhere without installation.

Stims is an interesting application. It will always ask twice for your confirmation before restarting your computer, which is useful when you're installing various applications and might accidentally select 'restart now.'