Alternatives to Sleep Preventer for all platforms with any license

  • Caffeine for Mac icon

    Caffeine for Mac

    Caffeine is a tiny program that puts an icon in the right side of your menu bar. Click it to prevent your Mac from automatically going to sleep, dimming the screen or starting screen savers. Click it again to go back. Hold down the...

    Free Mac

    • Discontinued The program is no longer updated and seems not to work. Last version, 1.1.1, released in December 2010, can be still downloaded from the official website.
  • Caffeine for Linux icon

    Caffeine for Linux

    Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to temporarily prevent the activation of both the screensaver and the "sleep" powersaving mode.

    Open Source Linux

  • Amphetamine icon

    Amphetamine

    Amphetamine is a little app that lives in your menu bar which can effortlessly override your energy saver settings and keep your Mac awake.

    Free Mac

  • Caffeine for Windows icon

    Caffeine for Windows

    If you have problems with your PC locking or going to sleep, caffeine will keep it awake. It works by simulating a keypress once every 59 seconds, so your machine thinks you're still working at the keyboard, so won't lock the...

    Free Windows

  • Don't Sleep icon

    Don't Sleep

    Don't Sleep is a small portable program to prevent system shutdown, Standby, Hibernate, Turn Off and Restart.

    Free Windows

  • Caffeinated icon

    Caffeinated

    Caffeinated is a simple utility to prevent your PC from going to sleep. It places an icon near the clock. Click the icon to keep your PC awake. Click it again allow automatic sleep. Caffeinated is heavily inspired by Caffeine for OS X.

    Open Source Windows

  • NoDoze icon

    NoDoze

    NoDoze simulates keyboard/mouse activity to keep the screensaver from activating. Its activity depends on currently running programs. You can use regular expressions or Windows wildcards to choose when the screensaver is deactivated.

    Open Source Windows

  • SleepLess icon

    SleepLess

    This application is used to prevent the computer from going to sleep without changing system settings can disable sleep with lid closed Safe Sleep (Hibernate) with one click one click activation / deactivation schedule...

    Commercial Mac

  • PleaseSleep icon

    PleaseSleep

    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. PleaseSleep sits in the background and waits for the sleep...

    Free Mac

    • Discontinued The developer has quit and the official site is gone except for a farewell message, but the site has been archived by Internet Archive: https://web.archive.org/web/20151202113600/http://www.dragonone.com/products/macosx/pleasesleep/
  • NoSleep icon

    NoSleep

    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...

    Open Source Mac

  • InsomniaX icon

    InsomniaX

    It always has been a missing feature: disabling the sleep mode on a Apple Laptop. Who does not want to use it as a big juke-box or go warwalking. The best looking server ever, especially at about one inch height. This small utility is...

    Free Mac

  • InsomniaT icon

    InsomniaT

    This is a kernel extension and clients that allow the MacBook to disable sleeping when the lid is closed. MOUNTAIN LION IS NOT SUPPORTED

    Open Source Mac

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  • Should I Sleep icon

    Should I Sleep

    Annoyed by the display getting dim when you're reading or watching something? What if the computer could “see and hear” you? By using a combination of heuristic sensors, such as FACE DETECTION, Should I Sleep checks if you are...

    Commercial Mac

  • Sleep No More icon

    Sleep No More

    A tiny menu bar application, that prevents your Mac from sleeping for a set amount of time.

    Free Mac

  • SleepTime icon

    SleepTime

    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. Not only that! With SleepTime, You can also keep your...

    Commercial Mac

  • Coffee_FF

    Coffee will keep your computer wide awake while your network is active or a program. Coffee prevents standby when your traffic speed on a selected network adapter is above the user configurable threshold or specific software selected....

    Open Source Windows

  • SmartSleep icon

    SmartSleep

    SmartSleep lets you select each sleep state. Additionally the new SmartSleep state lets your notebook just sleep while the battery has a high level. If the battery level drops below a certain point (default is less then 20% or 20...

    Commercial Mac

    • Discontinued Program hasn't been updated since 2013. No longer on app store.
  • Deep Sleep icon

    Deep Sleep

    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.

    Free Mac

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  • Ginseng icon

    Ginseng

    Ginseng is a lightweight desktop app for Windows that will keep your computer awake when active. This is useful for computers which have a screensaver policy that locks the computer after periods of inactivity. Ginseng works similar...

    Free Windows

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