XDA’s review of the Anker Solix E10 made the case that one whole-house UPS beats a closet full of small ones. Most of the comments under the piece agreed on the hardware and then asked the same question: which software actually shows what is happening when the power goes out? A modern UPS reports voltage, frequency, load, runtime, and battery health over USB or network, but the dashboard on the unit is rarely enough. We tested 7 of the best apps for UPS monitoring on desktop. The list mixes open-source daemons, vendor utilities, and one Home Assistant integration that ties the whole rack together.
The brief: pick tools that handle graceful shutdown reliably, surface meaningful telemetry, and don’t lock you into a single UPS vendor.
What to look for in a UPS monitoring app
The category is narrow but the differences are big. Match the tool to the deployment you actually have:
- Vendor lock-in. PowerChute is APC-only. PowerPanel is CyberPower-only. NUT and apcupsd support most APC and many CyberPower, Tripp Lite, Eaton, and clone UPSes.
- Network versus USB. Multi-host setups need a network protocol (NUT speaks RFC 9271). Single-host setups can stay on USB or serial.
- Graceful shutdown. Every tool below shuts down the host before the battery dies. The difference is how well they handle multi-host and slave-host shutdowns.
- Dashboarding. Some tools ship a UI; others expose data via SNMP or REST for Home Assistant, Grafana, or Zabbix.
- Notifications. Email, webhook, push, MQTT. Pick what your monitoring stack already speaks.
- Active maintenance. NUT and apcupsd are both actively maintained as of 2026; some vendor tools have stalled.
Quick comparison
| App | Best for | Vendor scope | Free plan | Platforms | Rating |
|---|---|---|---|---|---|
| Network UPS Tools | Multi-vendor, multi-host setups | 197 manufacturers, 1,400+ models | Yes, fully | Linux, macOS, Windows, BSD | High |
| apcupsd | Single-host APC monitoring | APC, some CyberPower | Yes, fully | Linux, macOS, Windows, BSD | Solid |
| PowerChute Personal Edition | Consumer APC desktops | APC only | Yes, fully | Windows, macOS | Solid |
| PowerPanel Personal | Consumer CyberPower desktops | CyberPower only | Yes, fully | Windows, macOS, Linux | Solid |
| PowerPanel Business Edition | Multi-site CyberPower | CyberPower-focused | Yes, fully | Windows, macOS, Linux, VMware | High |
| NUT-Monitor | NUT client UI | Whatever NUT supports | Yes, fully | Linux, macOS, Windows | Solid |
| Home Assistant NUT integration | UPS as part of a smart home | Whatever NUT supports | Yes, fully | Linux, macOS, Windows (HA OS) | Very High |
1. Network UPS Tools (NUT) — best for multi-vendor, multi-host
Network UPS Tools is the open-source default for anyone running more than one UPS or one host. The project has been active since 1996, ships with drivers for 197 manufacturers and over 1,400 hardware models as of v2.8.5 (April 2026), and speaks RFC 9271 over the network. The architecture is a server (upsd), a driver per UPS, and clients (upsmon, upsc, nut-monitor) that connect from any host on the LAN. Home Assistant, Proxmox, TrueNAS, Unraid, and most major distros ship NUT integrations out of the box.
Where it falls short: The config files are plaintext and the docs are dense; the first install takes an evening. The default UI is nut-monitor (Python Qt), which is functional but not pretty.
Pricing:
- Free: Fully free and open source (GPLv2)
- Paid: None
Platforms: Linux, macOS, Windows, BSD, illumos, AIX, HP-UX
Download: networkupstools.org or GitHub
Bottom line: The default for any home lab or small office with mixed UPS hardware.
2. apcupsd — best for single-host APC
apcupsd is the older sibling to NUT and the right pick when the deployment is exactly one APC UPS protecting exactly one host. The daemon is small, the config file is short, and graceful-shutdown handling on APC SmartUPS and Back-UPS units is rock solid. It works with a handful of CyberPower units too, but the matrix is shorter than NUT’s.
Where it falls short: Multi-host shutdown is possible but more awkward than NUT’s. The web UI (apcupsd-cgi) is bare; most people stop at the CLI.
Pricing:
- Free: Fully free and open source (GPLv2)
- Paid: None
Platforms: Linux, macOS, Windows, BSD, Solaris
Download: apcupsd.org or SourceForge
Bottom line: Lighter than NUT for a one-UPS, one-host APC setup. Pick NUT if the lab grows.
3. PowerChute Personal Edition — best APC vendor tool for consumers
PowerChute Personal Edition is Schneider Electric’s free Windows and macOS utility that pairs with consumer APC Back-UPS units over USB. The UI shows battery runtime, last self-test, and rough energy usage, and the configured shutdown behavior fires reliably. It is the easiest pick for a home user with a single APC desktop UPS who doesn’t want to think about daemons.
Where it falls short: Linux is unsupported. The Personal Edition is feature-capped versus PowerChute Business Edition (no SNMP, no multi-host); larger setups will outgrow it. There is no API.
Pricing:
- Free: Personal Edition, single-host
- Paid: Business Edition for SNMP and multi-host, license per server
Platforms: Windows, macOS
Download: se.com (search PowerChute Personal Edition for the latest installer)
Bottom line: The right pick for a single Windows or Mac home office on an APC Back-UPS.
4. PowerPanel Personal — best CyberPower vendor tool for consumers
PowerPanel Personal is CyberPower’s counterpart to PowerChute and the right pick if the UPS in the closet is a CyberPower CP1500AVRLCD, EC850LCD, or similar consumer model. The dashboard surfaces input voltage, load, and runtime; the event log catches every transfer to battery; and the email notifications are reliable. Linux support is there too, which puts it ahead of PowerChute Personal on Linux desktops.
Where it falls short: CyberPower hardware only. Some older Linux distros run into permissions issues with the USB driver on first install; the docs cover it but it is annoying.
Pricing:
- Free: Personal edition, single-host
- Paid: Business Edition for multi-host monitoring
Platforms: Windows, macOS, Linux
Download: cyberpower.com
Bottom line: The Personal pick for CyberPower owners. Move to PowerPanel Business if you grow beyond one host.
5. PowerPanel Business Edition — best for multi-site CyberPower
PowerPanel Business Edition is the upgrade path when the home lab grows out of Personal. The Management tier monitors CyberPower devices on the same network from a single dashboard, with OS shutdown, event logging, email notifications, local SNMP traps, and remote management. The Client tier handles graceful shutdown on protected hosts, including ESXi, Proxmox, Hyper-V, and most modern Linux server distros.
Where it falls short: Still CyberPower-favored; mixed UPS environments are better served by NUT.
Pricing:
- Free: Yes, fully free for monitoring CyberPower devices
- Paid: None
Platforms: Windows, macOS, Linux, VMware ESXi, Citrix Hypervisor
Download: cyberpowersystems.com
Bottom line: The right pick for a small office or home lab running multiple CyberPower units.
6. NUT-Monitor — best NUT client UI
NUT-Monitor is the official desktop client for NUT. It is a Python Qt application that connects to a upsd server (local or remote) and surfaces the live UPS state, drains, charges, and last events. The UI is functional, the binary is small, and it runs everywhere NUT runs.
Where it falls short: It is a client only. You still need a NUT server somewhere. The look is dated; this is not a polished commercial dashboard.
Pricing:
- Free: Fully free
- Paid: None
Platforms: Linux, macOS, Windows
Download: networkupstools.org
Bottom line: The desktop tray companion for any NUT setup.
7. Home Assistant NUT integration — best for the smart-home rack
Home Assistant NUT integration is what ties UPS telemetry into the broader home dashboard. The integration polls a NUT server every 60 seconds (configurable), exposes every variable the UPS reports as a Home Assistant sensor, and lets you wire automations to UPS events. The standard pattern is: on ups.status == OB (on battery), notify the household, start a 5-minute timer, and gracefully shut down the rack if mains has not returned.
Where it falls short: You need NUT running somewhere first. The integration does not include its own shutdown daemon; it is a sensor layer.
Pricing:
- Free: Fully free
- Paid: None
Platforms: Home Assistant OS, Container, Supervised, Core (Linux, macOS, Windows)
Download: home-assistant.io
Bottom line: The right way to put UPS state next to the rest of the smart home.
How to pick the right one
If you want the simplest option for a single APC unit on Windows, get PowerChute Personal Edition. If you want the simplest option for a single CyberPower unit, get PowerPanel Personal. If you have more than one UPS or more than one host, install NUT and stop reading. If you already run Home Assistant, install NUT on a small box and add the Home Assistant integration. If you outgrew Personal-tier vendor tools and stayed CyberPower-only, PowerPanel Business is the upgrade.
Skip Powerwalker VI Server and SolarWinds NPM UPS modules unless you already pay for the larger suite. They are not worth standing up for UPS monitoring alone.
FAQ
What is the best free UPS monitoring app?
Network UPS Tools (NUT) is the best free option for anyone with more than one UPS or more than one host. apcupsd is the lighter pick for a single-APC, single-host setup. Both are open source.
Does my UPS work with Home Assistant?
If it speaks USB HID, the NUT driver matrix likely covers it. Install NUT on a small Linux box that has USB access to the UPS, then add the NUT integration in Home Assistant pointing at that box. The integration takes minutes once NUT is up.
Will PowerChute work with CyberPower or Tripp Lite?
No. PowerChute Personal Edition is APC-only by design and the driver matrix does not extend. For mixed environments, use NUT.
Do I need a dashboard or is the UPS LCD enough?
The LCD shows you the state right now. A monitoring app gives you history, alerts, and graceful shutdown. For a single home PC the LCD is enough; for a home lab, a rack, or anything that should not fall over silently at 3 a.m., monitoring software is required.
Can NUT handle ESXi or Proxmox shutdown?
Yes. NUT ships with shutdown scripts for most hypervisors. Proxmox and ESXi each have their own integration paths; the NUT documentation covers both, and the home lab community has well-tested recipes on Reddit’s r/homelab and r/selfhosted.
