The Non-Sucking Service Manager
Publisher’s description
What is NSSM?
NSSM by NSSM is open-source Windows software.
Installation and requirements
The publisher provides Portable installers for 64-bit and 32-bit Windows. The main installer is 1 KB. It runs without installation (portable).
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
- Small download (1 KB)
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: NSSM is an open-source Windows tool for 64-bit and 32-bit PCs. Updates have slowed down.
Is NSSM safe to download?
- The file is served by nssm.cc, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
99F5045FFFBFFB745D67FE3A065A953C4A3D9C253B868892D9B685B0EE7D07B8· Open the VirusTotal report for this hash - The link did not answer when we last checked it (October 22, 2026)
- The source code is public
- 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 |
|---|---|---|---|
| 2.24-101-g897c7adLatest | May 16, 2017 | 1 KB | 64-bit ZIP32-bit ZIP |
Install from the command line
Silent install ›winget install --id NSSM.NSSM -escoop install main/nssmRelated guide: How to use winget: install and update apps
Information
- Publisher
- NSSM
- Licence
- Public Domain
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- Portable
- Version
- 2.24-101-g897c7ad
- Released
- May 16, 2017
- Added to the catalogue
- February 22, 2023
- Versions listed
- 1
- Website
- nssm.cc
- winget ID
- NSSM.NSSM
- Scoop package
- main/nssm
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is NSSM free?
Yes. NSSM is open-source software under the Public Domain licence.
Is NSSM safe to download?
The download comes from nssm.cc, 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 NSSM 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 NSSM 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 NSSM without administrator rights?
Yes, it is portable: unpack and run it.