Sleeper is a small utility program developed by PassMark Software to help test
the ability of PC systems to enter and recover from sleep and hibernation. It
has been designed to work with PassMark BurnInTest but will also work with 3rd
party applications. Sleeper allows you to:
- Put a PC into any sleep state (S1, S2, S3) supported by the system
- Place your PC into hibernation (S4)
- Wake the computer after a specified period of time.
- Put a PC to sleep or hibernation from the command line
- Force the PC into the requested sleep state
- Cycle through all sleep states or just all states supported by the system
- Launch Sleeper from BurnInTest scripts to test sleep states between test runs.
- Display the supported sleep states
Publisher’s description
What is Sleeper?
Sleeper by PassMark Software is proprietary Windows software.
Installation and requirements
The publisher provides Portable installers for 32-bit Windows. The main installer is 219 KB. It runs without installation (portable).
Pros / Cons
Pros
- Portable: runs without installation
- Small download (219 KB)
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
- 32-bit only
- No update for more than a year
In short: Sleeper is a Windows tool for 32-bit PCs. Updates have slowed down.
Is Sleeper safe to download?
- The file is served by passmark.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
C2ED7FF78CD98373054B077501C82CBFE914852014DC5E07F2F08031B028BB0C· Open the VirusTotal report for this hash - The link answered 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 |
|---|---|---|---|
| 2.3.1012Latest | December 9, 2016 | 219 KB | 32-bit ZIP |
Install from the command line
Silent install ›winget install --id PassMark.Sleeper -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- PassMark Software
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- Portable
- Version
- 2.3.1012
- Released
- December 9, 2016
- Added to the catalogue
- December 12, 2025
- Versions listed
- 1
- Website
- passmark.com
- winget ID
- PassMark.Sleeper
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Sleeper free?
Sleeper is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is Sleeper safe to download?
The download comes from passmark.com, 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 Sleeper 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 Sleeper run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.
Can I use Sleeper without administrator rights?
Yes, it is portable: unpack and run it.
