Tired of your screen dimming or computer going to sleep while watching a movie or just reading a webpage for a lengthy period of time?  Caffeine the popular Windows program to keep your computer awake is not available on the Mac from the Mac App Store.  Just fire it up and it lives up in your menu bar and simulates a non used keystroke to keep your computer from snoozing when you do not want it to be.  It’s a free App and even if it cost 99 cents it would still be worth it.  You can get it by clicking here.