Apps similar to Onliner include Amphetamine, which is free. Other options are Green Dotter, Caffeine for Windows, Trypa and Caffeine for Linux. There's no shortage of Prevent Sleep Mode Apps like Onliner, with more than 25 alternatives for Mac, Windows, Android, Linux and iPhone.
KeepOn allows you to keep your device's screen on for the desired duration and also allows you to return to the default settings automaticaly when the screen turns off.
Mouse Jiggler is a very simple piece of software whose sole function is to "fake" mouse input to Windows, and jiggle the mouse pointer back and forth.
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Don't Sleep is a small portable program to prevent system shutdown, Standby, Hibernate, Turn Off and Restart.
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Clapet is a utility that aims to improve clamshell mode on your Macbook by automatically managing sleep when an external display is detected.
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.
A small GNOME utility application to send Wake On LAN (WoL) magic packets to devices in a network.
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Mouse Jiggler for Windows Terminal, rewritten in F#. "Mouse Jiggler" is a utility that simulates mouse movement to prevent a computer from going idle or activating the screensaver.
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.
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.
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.
