# networkupstools/nut

The Network UPS Tools repository. UPS management protocol Informational RFC 9271 published by IETF at https://www.rfc-editor.org/info/rfc9271 Please star NUT on GitHub, this helps with sponsorships!

Repository: https://github.com/networkupstools/nut
Canonical: https://ross.abutalabs.com/products/nut
Homepage: https://networkupstools.org/
Language: C
License: NOASSERTION
License Family: other
Topics: management, modbus, monitoring, netxml, nut, pdu, serial, snmp, ups, usb, epdu
Last push: 2026-08-24T08:06:01+00:00

## Health v2 (maintenance only)
Score: 83/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 53, longevity 100
- inputs: {"age_days": 4952, "days_push": 9, "days_rel": 152, "gap_med": 118.5, "n_releases_24m": 3}
- flags: no_license, no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4290, forks 465 (observed 2026-08-28T04:08:41.378186+00:00)

## What it is
Network UPS Tools (NUT) is an open-source toolkit for monitoring and managing power devices such as UPS units, PDUs, ATS switches, PSUs, and solar controllers across hundreds of vendors via a unified protocol (published as RFC 9271). It uses a layered client-server architecture with drivers, a server, and network clients, running on most Unix-like systems and partially on Windows.

## Use cases
- monitor ups battery status on linux server
- shut down servers automatically when power fails
- manage pdu and ats devices from one interface
- monitor ups over snmp or usb
- centralized ups monitoring across network
- graceful shutdown of nas during power outage
- track power events and ups health

## When to choose
- you need vendor-neutral monitoring of UPS/PDU hardware across many manufacturers
- you want automated shutdown of multiple networked hosts on power loss
- you need a long-standing, widely packaged solution with broad hardware compatibility

## When to avoid
- you only need a vendor's own Windows GUI tool for a single desktop UPS
- your device is not in NUT's hardware compatibility list and no generic driver fits
- you need a pure cloud/SaaS monitoring solution without local daemons

## Facets
- artifact type: application
- maturity: active
- function: monitoring, networking, cli, http-server, sdk
- domain: hardware, monitoring, self-hosted, embedded-systems
- platform: windows, bsd, cross-platform, cli, self-hosted
- tags: ups, pdu, power-management, snmp, usb, serial, hardware-monitoring, server-protection, c, devops, linux, macos

## Member repositories
- networkupstools/nut (main) score 83

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:41.378186+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:21:54.624702+00:00, confidence not recorded.
  - homepage: https://networkupstools.org/ (fetched 2026-08-29T09:11:15.569137+00:00, sha f0301aaf2ee0)
  - site_page: https://networkupstools.org/features.html (fetched 2026-08-29T09:11:15.572229+00:00, sha f62c6c5fa972)
  - site_page: https://networkupstools.org/documentation.html (fetched 2026-08-29T09:11:15.575356+00:00, sha abeecad28c90)
  - site_page: https://networkupstools.org/docs/man/nut.html (fetched 2026-08-29T09:11:15.580507+00:00, sha 9f9804ac7c95)
  - site_page: https://networkupstools.org/docs/release-notes.chunked/NUT_Release_Notes.html (fetched 2026-08-29T09:11:15.583473+00:00, sha cb871ca452dd)
  - site_page: https://networkupstools.org/docs/qa-guide.chunked/index.html (fetched 2026-08-29T09:11:15.591492+00:00, sha 06652cbadcc2)
  - site_page: https://networkupstools.org/historic/index.html (fetched 2026-08-29T09:11:15.578412+00:00, sha 750614cdf8c8)
- Data as of 2026-08-30T08:39:29.467469+00:00.