When it's not possible to change the screensaver settings in your Windows environment, then it's almost impossible to show things on your screen for a longer period without activating the screensaver.
Lungo Alternatives
Lungo is described as 'Keeps your Mac awake' and is a prevent sleep mode app in the os & utilities category. There are more than 25 alternatives to Lungo for a variety of platforms, including Mac, Windows, Linux, Android and Flathub apps. The best Lungo alternative is Amphetamine, which is free. Other great apps like Lungo are Caffeine for Windows, Stimulator, Caffeine for Linux and PowerToys - Awake.
Alternatives list
Coffee allows you to keep the display awake without having to change the device settings. It can be toggled at various places:
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Android
- F-Droid

- 34 Sleep Preventer alternatives
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.




- 42 Theine alternatives
Prevent your Mac from falling asleep, dimming your screen or starting the screensaver. Theine keeps macOS awake just like caffeine does with you.


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

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...



This application is used to prevent the computer from going to sleep without changing system settings
MoccaFaux is a flexible scheduler that prevents the activation of screen savers and power-saving modes when certain conditions are met.
This app will keep your system awake for a defined period of time. It will pause the energy settings and prevent the screensaver from starting.



Anti-Sleep App for your Mac.
Caffeinated prevents your Mac from going to sleep, dimming your screen or starting the screensaver.


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