NoSleep is a lightweight tool that prevents Windows from automatically activating the screen saver, sleep mode, or lock screen. It's designed for situations where you can't change these settings yourself—for example, due to corporate-enforced policies. Inspired by Linux Caffeine. Windows PowerToys includes a tool called Awake that does the same thing, but PowerToys may require administrator privileges and is quite large. NoSleep aims to be as minimal as possible and runs without any extra permissions.
What's new in 1.4.1
Optimization-oriented release for recent App Watching addition:
Yes. NoSleep is free and open-source software released under the Unlicense license.
What is the latest version of NoSleep?
The latest version is 1.4.1, released on Mar 5, 2026.
Is it safe to download NoSleep?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 60438cfa31f27c111ff745d41785d1c6b18b119e1c1cc45901aa36f90ce01025.
Which Windows versions does NoSleep support?
NoSleep runs on Windows and is available for 32-bit (x86) systems.
How do I uninstall NoSleep?
Open Settings › Apps › Installed apps, find NoSleep and select Uninstall. From the command line, run winget uninstall --id=CHerSun.NoSleep -e.
Is there a portable version of NoSleep?
Yes. NoSleep is available as a portable program (NoSleep.exe, 32-bit (x86)) that runs without installation. Copy it to any folder or USB drive and run it from there.
Alternatives to NoSleep
Other Programming Languages programs for Windows from different developers.
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