Caffeine1.1.3

Love it.... I can work on multiple PCs and not worry about one of them going on hybernation and needing to log in again!

I've used a couple of these "no sleep" apps and found Caffeine to be simple and effective with minimum setting !

I can download anything and go to sleep whilst my computer is working and in the morning all is done. Thanks

It does one job, simply and intuitively.

The typical situation when I need Caffeine is when practicing a song, reading lyrics on the screen. Well, I generally forget to launch it the first time, though... :-D

Love it.... I can work on multiple PCs and not worry about one of them going on hybernation and needing to log in again!

I’ve been using this app forever, and so happy it still works. Thank you to the makers and developers!

After the apparent abandonment of Caffeine by its developer and its not support the retinas screens and Dark mode on Yosemite, I decided to look for a replacement the height! I found the incredible Wimoweh also that works perfectly and has several more options including: not let Mac sleep but allow the monitor to sleep. Found it amazing! S2

Works, do what it is intend to, simple, efficient. What else?

Is there a way to suppress the preferences window at launch? It's a bit of an annoyance to have to manually close the prefs window every time the app launches--they can be accessed via right clicking the menu bar icon, so I see no reason we should be faced with the prefs every time the app starts. Is there a way to change this that I'm missing?

Does what it says. It wont let the comp sleep, unless you close the lid. I wanted something where I could close the lid too, and this just inst the solution. NoSleep seems to do the job better.

Not working for me on 10.8.3 and a late 2008 iMac. Seems to be doing nothing at all, as my Mac is still sleeping based on Energy Saver preferences.

This program works great for me with Mountain Lion. Does just what it is supposed to do. I have a backup routine set up to run in the middle of the night and prior to installing this it was always interrupted by power sleep. Once I installed this and set it up to prevent sleep my backups work wonderfully. Power Nap has its place but unfortunately the power nap mode does not respond to most non apple applications once engaged. This resolves that problem. It always amazes me that people read a developers statement about what his/her app is supposed to do and then download it expecting it to do something very different…and then write a bad review because you did not believe the developers description of his/her product? I fully understand giving suggestions on possible improvements etc but to rate the app down because it was not built and tailored to meet your needs? Especially on a free app. Software is like anything else buyer beware and do not throw a temper tantrum because you failed to research what you are buying/ downloading. Sorry for ranting but it is just such a waste of time to read some reviews. However real feedback, suggestions for improvement and reviews that point out things the app promises to do but either fails to do or fails to do appropriately are so helpful and I very much appreciate this site for providing a forum for access to the same. I think that the misplaced reviews are also a result of poor reading comprehension as some can not tell a comment from a review?

Doesn't work on Airbook 10.7.5 after multiple downloads. Have done everything else, the only way my mac stays bright is if I keep the color LCD display window OPEN on the brightest level. The minute I close it, it changes itself to the dim menu. When I open it back up, the slider is back to dim. This is with Caffeine running.

Works just great. Computers need no sleep, people do.

Simply brilliant, though I dislike the icon, so I made my own ones: http://www.zibity.com/othergoodies#caffeine

Very useful for preventing sleep while giving presentations, watching videos or downloading large files. It does exactly what I want and does it well with a nice simple user interface and no problems.

I love this program! My Mac is plugged in 99% of the time when I am not travelling. With one click, Caffeine allows me to keep my Mac alive and disable the power-saving options. Very useful when background tasks (like Picasa photo uploads) are running, or when I don't want the hassle of waking the Mac back up from sleep. Free, simple, and easy to use.

Fantastic and free. Thanks.

Probably the app I use the most on my Mac. Just perfect.

Caffeine is fantastic! Very simple and convenient. User-friendly as well.

This is a great program. I like it a lot ! I would like to have an option, so that it prevents the CPU from sleeping (programs keep running) but lets the screen sleep (LCD turns off).

An unambitious but valuable little app. I like it and use it often.

I love Caffeine. Any way future versions could incorporate the option to disable other things too? If it could talk to Growl and disable Growl notifications, or disable other clutter, it would be indispensable for things like watching a movie, giving presentations, et cetera.

I use it all the time. It's a great little app that works excellently. I don't know what I'd do without it.

Works as advertised and on 10.6.2 and is indispensable for me.

The perfection of minimalism: fully functional, does one thing perfectly. I use it every day & it works fine.

I downloaded this software so I wouldn't have to change my system preferences every time I wanted to watch a movie. This little app is excellent! It was exactly what I was looking for and program use couldn't be simpler. Just click on the coffee cup and that's it! Returning to regular mode works exactly the same! It's a great little free program. Simple, straight-forward, easy to use.

Have you ever heard the old saw, "Never look a gift horse in the mouth"? Caffein is FREE. When one pays for an App one gets the right to complain about it.

Great! Was looking for it. Sometimes while reading a complex document relaxing on my chair I need the sleep/display-sleep disabled without going to PrefPane. This application does exactly what is needed in such cases. Keep it up. :)

This is a wonderful little utility. I frequently attend webinars, and use SnapzPro to do a video capture. I would always forget to turn off both the screen saver and power saver (I'm on a MacBook, 10.5.7) at the beginning of the webinar. Now, I just click the coffee mug in the menu bar, and I'm good to go. Feature request: this is probably a whole other can of worms, but I'd love a single-click utility with Caffeine's function that also includes the option to pause things like iCal alarms, system alerts, etc. In the meantime, anyone know of a utility that does this other function?

For the simple act this program performs, not only does it perform it well without a clutter of "extra" and unneeded features, but one doesn't realize how useful this simple act can be until they start using Caffeine. I use my computer off and on throughout the day. So things are set so that if I'm away for more than a few minutes the screensaver clicks on. If I'm away for fifteen to twenty minutes the computer goes to sleep. Based on my work habits, that works well for me. But getting into the system preferences to deactivate the screen saver and sleep mode if I'm doing something without input for awhile gets to be a pain. And although iTunes deactivates these settings if you're watching a video, watching something online with a browser doesn't have that benefit. South Park online is a guilty pleasure, I must admit. So Caffeine's little coffee cup sits in my menubar and is very easy to click on when I need it. If only it were that easy to keep myself awake and alert for those late night pushes for a deadline!

What a useful little app! The addition of a setting for a default duration makes this even easier to use.

there seems to be a minor interface glitch with this version of caffeine (1.0.4). under os x 10.4.11, when command clicking on the icon, the submenu which allows one to activate caffeine for a specific period of time, does not display text. just thought i'd let you know.

This is a great little program that does exactly what it says. I find it very useful to use when giving presentations.

Very nice app. It could use a different menu bar icon but it's fine. I would like to be able to move it around on the menu bar, perhaps that feature could be added. Anyways, nice application.

A non intrusive great little does-as-you-wish app for when you want to keep your computer from sleeping that works well. What else can I say?

I like the cup icon. I find it easy to see (on 13" laptop) and the rounded shape looks good in the menu bar next to the Awake and Time Machine icons. I don't think it's any less intuitive than the ZzZ - it's just what you're used to. Perhaps a choice could be possible? Needing to reopen on restart is a pain, but at least it's just a matter of tapping the icon. Love this app. It makes everything easier.

Back to old 1.0 ZzZ icon PLEEEASE !!!

The new icon is *horrid* and very non-functional. It was easy to tell at a quick glance whether your Mac was sleeping before. Now, you have to squint and try to figure out if the cup's full or not. Bad, bad, bad, bad, bad!

I agree with GPAPAIN: Useful, but please return to the "old" icon: the new one is less intuitive, or at list let the coffee cup become red when the Mac can't sleep!

The old icon was ugly and the new one is much more attractive. However, it isn't as easy to notice that the computer is caffeinated without intentionally looking to see. Maybe if the caffienated cup was red it would help.

My MacBook constantly starts the screensaver after about 3 minutes for some reason even if I have the settings to 'never'. Been trying to figure out what the problem is but to no avail. This app is a pretty handy solution!

Yay! I'm personally super-thrilled to see the new coffee cup icon in the Menubar. So, +1 from me!

Useful ! But please, back to the "old" icon !!!!!

Useful but needs choice for menubar icon. Don't like the new one !

Works like a charm. Unobtrusive and very useful.

Hi, Does Caffeine also prevent the hard drive from sleeping? Thanks : )

I spent some time with AppleCare yesterday and googling around, and downloaded and evaluated a few tools here such as Sleepless, Insomnia, Caffeine, and Doze. None of these work for my particular problem, which is that my MacBook just insists on going to sleep when I close the lid, and I don't want it to do that. I understand that Apple has some cooling issues with running the laptop with the lid closed, but I'd love a hidden preference to enable keeping the system awake, if only for a minute or two. I wrote up a blog entry on this, and would be interested if anyone has any thoughts. http://paulmcnett.com/blosxom.cgi/2007/03/23#Apple_MacBook_Sleep_Lid_Closed_Problem_Solution