NutBar
UPS status for your Mac,
right in the menu bar.
NutBar connects to your Network UPS Tools server and shows battery, runtime, load, and power status — directly from your Mac. Get alerts when power events happen, automate sleep when battery runs low, and stay informed without opening a dashboard.
Requires macOS 26 Tahoe or later.
Everything you need.
Nothing you don't.
Live UPS Monitoring
Continuously checks your UPS status. From a quick glance, know whether utility power is present, the UPS is on battery, and how much charge remains.
Battery, Runtime & Load
Check battery status, charge, estimated runtime, current load, and voltage details without switching apps or opening a dashboard.
Notifications & Automation
Get notified when power fails, returns, or the battery reaches low thresholds. Automatically put your Mac to sleep when runtime drops below a safe level.
Native Menu Bar Experience
Lives where it's most useful. No dashboard to keep open, no app switching. Your UPS status is always one click away from anywhere on your Mac.
Authentication Support
Supports username and password authentication for NUT servers that require credentials, so you can monitor protected installations.
Flexible Polling & Thresholds
Adjust update intervals and notification behavior to match your setup. Tune NutBar for frequent checks or a lighter touch depending on your environment.
Up and running
in five steps.
-
Install NutBar
Download from the Mac App Store.
-
Enter your NUT server
Provide the hostname and port of your NUT server in the settings window.
-
Add credentials (optional)
If your NUT server requires authentication, enter a username and password.
-
Test the connection
Hit the test button to verify NutBar can reach your UPS.
-
Save and monitor
Save your settings and NutBar keeps watch from the menu bar automatically.
Built for people who
already run NUT.
Home Lab Users
Keep an eye on UPS power without leaving your desk or opening a terminal.
NAS Owners
Your NAS runs NUT — now your Mac can show that data in the menu bar.
IT Admins & Developers
Lightweight desktop visibility into power state without a full monitoring stack.
Home Office Workers
Know when power fails — keep working or put your Mac to sleep.
Native and focused.
NutBar is not a generic dashboard squeezed onto the desktop. It's a purpose-built macOS app for a single job: making UPS status easy to see and easy to trust. Built with SwiftUI and designed around the way Mac users expect menu bar tools to behave.
Common questions.
What macOS version do I need?
NutBar requires macOS 26 Tahoe or later. Earlier versions of macOS are not supported.
What is NUT?
NUT, or Network UPS Tools, is a widely used open-source system for monitoring and managing UPS devices across a network.
Do I need to connect the UPS directly to my Mac?
No. NutBar connects to a NUT server over the network, so your UPS can be attached to another machine that exposes data through NUT.
Does NutBar support authenticated NUT servers?
Yes. NutBar supports username and password authentication for NUT servers that require it.
What information can NutBar show?
Depending on what your NUT server exposes, NutBar can show battery charge, runtime, load, voltage, device model information, and current power status.
Will I get notified when power fails?
Yes. NutBar can notify you when the UPS switches to battery, when power is restored, and when battery thresholds are crossed.
Can NutBar sleep my Mac automatically?
Yes. You can configure NutBar to automatically sleep your Mac when UPS battery or runtime drops below thresholds you set, helping protect your work during extended outages.
Ready to monitor
your UPS?
Download NutBar and keep your power status visible from the Mac menu bar.
