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 screen or activate the screensaver.
The icon is shown above - it's the leftmost one in the task tray, and this is all you see. Double-clicking the icon empties the coffee pot (that's what the icon is) and temporarily disables the program. Double-clicking it again refills the pot, and will keep your machine awake.
By default the app starts enabled, and works every 59 seconds. There are some command line switches you can use to alter this behaviour.
Publisher’s description
What is Caffeine?
Caffeine is a free program for Windows from Zhorn Software.
Installation and requirements
Official installers exist for 64-bit and 32-bit as Portable. It runs without installation (portable).
Popularity and file types
The Chocolatey package has been downloaded 362,859 times.
Pros / Cons
Pros
- Free to use
- Portable: runs without installation
Cons
- No native ARM64 build
- No update for more than a year
- The official download link did not answer at the last check
In short: Caffeine is a free Windows tool for 64-bit and 32-bit PCs. Updates have slowed down.
Is Caffeine safe to download?
- The file is served by zhornsoftware.co.uk, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
4A259C348E59EB51BBB75AAC7FDCC798705496D575892EE1E01FFF6970D5BA1C· Open the VirusTotal report for this hash - The link did not answer when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.98Latest | November 4, 2024 | — | 64-bit ZIP32-bit ZIP |
Install from the command line
Silent install ›winget install --id ZhornSoftware.Caffeine -echoco install caffeine -yscoop install extras/caffeineRelated guide: How to use winget: install and update apps
Information
- Publisher
- Zhorn Software
- Licence
- Free
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- Portable
- Version
- 1.98
- Released
- November 4, 2024
- Added to the catalogue
- November 4, 2024
- Versions listed
- 1
- Chocolatey downloads
- 362,859
- Website
- zhornsoftware.co.uk
- winget ID
- ZhornSoftware.Caffeine
- Chocolatey package
- caffeine
- Scoop package
- extras/caffeine
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Caffeine free?
Yes. Caffeine is free to use.
Is Caffeine safe to download?
The download comes from zhornsoftware.co.uk, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Caffeine with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does Caffeine run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
Can I use Caffeine without administrator rights?
Yes, it is portable: unpack and run it.
