But the developer has also added options for timed use: By default, clicking Caffeine’s menu-bar icon toggles the “caffeinated” state on and off, but if you right-click (Control-click) the icon, you can activate Caffeine’s no-sleep feature for a set amount of time-5, 10, 15, or 30 minutes, or 1, 2, or 5 hours-after which your Mac automatically returns to its normal Energy Saver behavior. Perhaps the biggest change since my first review is that Caffeine now works properly with Snow Leopard. Since my original review, Caffeine has received a few notable updates, and it’s now available-and still free-both directly from the developer and (Caffeine’s icon is a full cup of coffee when active, and an empty cup when inactive.) Your normal Energy Saver settings never change, but your Mac stays wide awake whenever you need it to. Caffeine is useful when you’re watching a movie or online video, giving a presentation, or looking at a complex document: Instead of having to go to the Energy Saver pane of System Preferences to turn off all screen-dimming, screen-saver, and sleep options, you just click Caffeine’s systemwide menu-bar icon to activate a “sleepless” state when you want to revert your Mac to its normal state, you just click the icon again. Reviewed Caffeine, a nifty utility for preventing your Mac from automatically dimming its screen (or starting a screen saver or going to sleep) if you aren’t using the cursor or keyboard. Back in the August 2007 print issue of Macworld, I

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