Caffeine

didn't work for me on os 12, mac still went to sleep. solved with a very similar app available on mac app store "Owly"

Didn't work. Mac slept right away with this app on.

This is awesome. You know why? I can sleep now and my Teams app still will show my status as "active".

Its great.

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!

Still run fine with Mojave (exept a very little aesthetic detail with the menu bar icon) ; the lightweight caffeinate app : 261 KB ! Amazing ! Thanx 2 dev

Just discovered that this function is built in! Just type 'caffeinate' into a terminal window. Add “-t xx” to specify duration in seconds. So -t 3600 for an hour.

It just does what it supposed to do. One of the first apps I always install on new Macs. But currently, on Yosemite, it keeps "selected" after a click to make it Active.

I tried the following programs Amphetamine, Caffiene. Anti Sleep. I like Anti Sleep best, especially for the new MacBooks with Haswell chips that no longer have a 'Never Sleep' option under Power Preferences. Here's what I like in Anti Sleep:
1) has a auto launch/auto activate on system startup option, great for remote systems, like a laptop, that need to be always on for access. No human needed to activate.
2) Has options to only activate when powered by AC, versus battery, or both. Again, great for laptops.
3) Display sleep can be set separately from machine sleep.

I provide remote assistance to family. When they need me to look at something on their system, I just need to tell them turn on the laptop, plug it in, leave the lid up. They don't even need 'activate' since it is set to auto launch and activate if AC power is on. I can then log in anytime thereafter, even late night. I set options auto launch/activate at startup, activate only when AC is on, and stay awake indefinitely.

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

I love this app...but it needs to be updated for Yosemite. Sometimes the menu icon blacks out and the only way to fix it is to exit/relaunch.

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.