This is a kernel extension and clients that allow the MacBook to disable sleeping when the lid is closed. MOUNTAIN LION IS NOT SUPPORTED
Sleep Preventer Alternatives
Sleep Preventer is described as 'Prevents your computer from going to sleep, hibernate, dim the display or start the screensaver. Application runs in the system tray when closed. New in version v1.3: -Parameter support. v1.2: Option to let display fall asleep. v1.1: Sleep timer' and is a prevent sleep mode app in the os & utilities category. There are more than 25 alternatives to Sleep Preventer for a variety of platforms, including Mac, Windows, Android, Linux and Flathub apps. The best Sleep Preventer alternative is Amphetamine, which is free. Other great apps like Sleep Preventer are Stimulator, PowerToys - Awake, Caffeine for Windows and nosleep.page.
Alternatives list
- 24 InsomniaT alternatives
Simulates activity (=> disables screensaver and powersaving) while running programms (any .exe) from a choosen directory. Main purpose is to choose the steam directory to disable monitor powersaving while running steam games.

This application is used to prevent the computer from going to sleep without changing system settings
Keep your screen on when your device is running your GPS application, favorite remote control, playing a movie or slideshow, etc... Perfect to keep your screen on without dimming for application development. Your screen will never go back to sleep until you want it to...



Keeps your computer in an active state. No install required, fully portable and can run from a USB. Completely free for everyone.



PleaseSleep is a utility software designed for Mac OS X that helps put your computer to sleep when you know some other app is preventing your Mac from going to sleep.
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Mac

- 25 NoSleep alternatives
NoSleep makes closing of your MacBook lid possible without going to a sleep mode. Now you shouldn't have to plug your mouse and monitor to stay computer awake - just activate it by clicking a menu bar icon or check a tick in the System Preferences and continue downloading...
Cost / License
- Free
- Open Source
Alerts
- Discontinued
Platforms
- Mac

Deep Sleep is a simple Dashboard widget which allows users to put their computer into hibernation mode, also sometimes called software suspend mode. This widget only works on a limited number of Apple computer models.
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Mac
Cost / License
- Freemium (Pay once or Subscription)
- Proprietary
Platforms
- Mac



- 29 SleepTime alternatives
SleepTime is a light-weight app that lives on your menu bar, letting you easily set a timer to put your Mac on sleep automatically after a specified time period you choose.
Cost / License
- Pay once
- Proprietary
Platforms
- Mac



Lightweight, portable, and very practical application that displays and locks the computer idle time, falsely informing the system about user interaction.
Cost / License
- Free
- Proprietary
Platforms
- Windows























