NSClient++ (a.k.a. NSCP) is a free and open-source monitoring agent originally
built for Nagios/Icinga and now usable with most modern monitoring systems.
It exposes a wide range of system, performance and event-log checks via NRPE,
NSCA, NRDP, REST and Prometheus-compatible endpoints, and can run external
scripts in PowerShell, Python, Lua, Visual Basic and many more languages.
Publisher’s description
What is NSClient++?
NSClient++ by MySolutions NORDIC is open-source Windows software in the monitoring & benchmarks category. It is written in C++.
Installation and requirements
The publisher provides MSI installers for 64-bit and 32-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 0.25.0, released on October 12, 2026. The version history goes back to April 13, 2025: 31 releases, all linked to the official files. That is about 21 releases a year. The last update is less than a month old.
Popularity and file types
The source code on GitHub (mickem/nscp) has 290 stars. Similar programs include Veyon, Datadog Agent and windows_exporter.
Project description on GitHub: “NSClient++”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Frequent updates (about 21 a year)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: NSClient++ is an open-source monitoring & benchmark tool for 64-bit and 32-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is NSClient++ safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
B2F5A0ACD907DFB79E4E82592FE42C99AA4B11506CE0F3D96FD8FD18F92AE471· Open the VirusTotal report for this hash - The link has not been checked yet
- 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 31 versions ›31 versions over 1 year · about 21 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 0.25.0Latest | October 12, 2026 | — | 32-bit MSI64-bit MSI |
| 0.24.1 | September 30, 2026 | — | 64-bit MSI32-bit MSI |
| 0.24.0 | September 30, 2026 | — | 64-bit MSI32-bit MSI |
| 0.22.0 | September 21, 2026 | — | 64-bit MSI32-bit MSI |
| 0.21.0 | September 14, 2026 | — | 64-bit MSI32-bit MSI |
| 0.19.0 | September 7, 2026 | — | 64-bit MSI32-bit MSI |
| 0.18.1 | August 31, 2026 | — | 32-bit MSI64-bit MSI |
| 0.17.0 | August 25, 2026 | — | 64-bit MSI32-bit MSI |
Install from the command line
Silent install ›winget install --id Mickem.NSClient -emsiexec /i NSCP-0.25.0-x64.msi /qn /norestartmsiexec /x {48DB21CB-9276-46D9-BF9B-31AD2DCEFCDB} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- MySolutions NORDIC
- Category
- Monitoring & benchmarks
- Licence
- Apache-2.0 OR GPL-2.0-only
- Price
- Free
- Source code
- github.com/mickem/nscp
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- MSI
- Version
- 0.25.0
- Released
- October 12, 2026
- Added to the catalogue
- May 18, 2026
- Versions listed
- 31
- Updates / year
- 20.7
- GitHub stars
- 290
- GitHub forks
- 102
- Website
- nsclient.org
- winget ID
- Mickem.NSClient
- MSI product code
- {48DB21CB-9276-46D9-BF9B-31AD2DCEFCDB}
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to NSClient++
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Frequently asked questions
Is NSClient++ free?
Yes. NSClient++ is open-source software under the Apache-2.0 OR GPL-2.0-only licence.
Is NSClient++ safe to download?
The download comes from github.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 NSClient++ 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.
Can NSClient++ be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does NSClient++ 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.
Where can I download an older version of NSClient++?
The versions page lists all 31 versions with links to their official installer files, back to April 13, 2025.
What are alternatives to NSClient++?
Veyon, Datadog Agent, windows_exporter, Alloy and LibreHardwareMonitor. The alternatives page compares them.
