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Editors’ Review
No Sleep is a small utility developed by Flyos that keeps the computer from entering sleep mode or activating the screen saver. It keeps the system active by sending periodic signals to the operating system, which prevents idle detection.
No Sleep runs in the background and continues functioning without manual intervention once activated. You can launch it through a simple executable file and close it at any time to restore normal power-saving behavior. This free program’s primary focus is on maintaining system activity states like keeping your computer awake during long builds, without altering other power settings or affecting unrelated processes.
Block your sleep
No Sleep blocks automatic sleep mode and screen saver activation by sending periodic signals to the system. It uses a lightweight method to keep the system's inactivity timer from triggering. Its entire operation is controlled by starting and stopping the program, as it has no additional settings. This minimal setup keeps the scope focused on maintaining the active state of the machine without modifying other power management configurations.
The program is a single executable with a minimal interface. It is activated by opening the file and stopped by closing it from the taskbar or system tray. It also has no menus, toolbars, or customization options. Its entire function is controlled by starting and stopping the program, which in turn toggles the prevention of sleep and screensaver events. However, it lacks scheduling or automation features.
When it starts running in the background, the system’s idle timer stops progressing toward sleep or screen saver activation. The process remains active until you manually end it, at which point the operating system resumes normal power-saving behavior. No branching actions and no secondary prompts or interactive stages. Once active, its signal-sending process runs at fixed intervals until the application is shut down, restoring the system’s default idle response.
Pros
- Runs continuously once launched
- Prevents both sleep mode and screen saver
- Operates without altering power settings
- Lightweight with minimal system presence
Cons
- No scheduling or automation features
Bottom Line
No more naps
No Sleep is a simple tool that only prevents your computer from entering sleep mode, hibernating, or activating the screen saver. It functions without complex configuration, relying on a consistent background process to send periodic system signals. The program is simple and has a narrow focus. However, this means that it lacks customization options, extra tools, or integrated scheduling features.
What’s new in version 1.2.2
- Released version
Used No Sleep for Windows? Share your experience and help other users.
