WinNUT

What is WinNUT?

WinNUT is a Windows desktop client for a Network UPS Tools (NUT) server. It brings UPS readings into a WinForms interface so you can check battery charge, voltage, load and power conditions without working directly on the server. It also offers power-event notifications and configurable suspend or shutdown triggers. The linked download is the publisher's stable 2.2.8719 MSI installer, not a development build.

You need an accessible NUT server connected to the UPS; WinNUT is the monitoring client, not a replacement for that server. Install the Windows client and configure its connection for your existing NUT setup. The publisher documents additional NAS-side access settings for Synology and QNAP systems. Release 2.2.8719 uses .NET Framework 4.8, with Windows 7 SP1 identified by the publisher as the minimum system requirement. That is a published minimum, not a claim of current operating-system support or a compatibility test.

Treat the gauges as a view of the data available from your UPS and NUT server, not as independent measurements. The maintainer documents fallback readings when variables cannot be retrieved, which can make missing data appear to be real values. Check the connection and server data before relying on a displayed value for a shutdown decision. The project also discusses eventual replacement by Coco.Nut; that development plan does not make the offered stable release a new or actively tested build. The screenshot is a historical French-language interface example from the project's issue discussion, not a screenshot of a local installation or proof of the selected release's behavior.

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