# Harvey-OS/harvey

A distributed operating system

Repository: https://github.com/Harvey-OS/harvey
Canonical: https://ross.abutalabs.com/products/harvey
Homepage: https://harvey-os.org/
Language: C
License: MIT
License Family: permissive
Topics: operating-system, distributed-systems, harvey-os, c, plan9, harvey, wiki, hacktoberfest2020
Archived: true
Last push: 2022-07-29T21:16:22+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4068, "days_push": 1496, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1441, forks 111 (observed 2026-08-28T04:04:44.286854+00:00)

## What it is
Harvey OS is a re-release of the final 4th Edition of Plan 9 from Bell Labs, a distributed operating system originally released in 2002. It is intended primarily for educational and research purposes, preserving the last state of Plan 9 as distributed directly by Bell Labs under an open-source license.

## Use cases
- study the Plan 9 operating system design
- research distributed operating systems and the 9P protocol
- run a historical Bell Labs Plan 9 4th Edition system
- explore Plan 9 authentication and file server concepts like factotum, venti, and fossil
- educational coursework on operating system internals

## When to choose
- you want to study or research the original Plan 9 4th Edition codebase
- you need a historically accurate Plan 9 distribution for education
- you are researching 9P2000, venti, or fossil as they existed at Bell Labs

## When to avoid
- you need a modern, actively developed Plan 9 derivative such as 9front
- you need a production operating system for daily use
- you need modern hardware support, security updates, or a package ecosystem

## Facets
- artifact type: application
- maturity: maintenance
- function: networking, file-system
- domain: operating-systems, microservices, developer-tools
- platform: cross-platform
- tags: plan9, distributed-operating-system, 9p, bell-labs, research-os, c, operating-system, research, linux

## Member repositories
- Harvey-OS/harvey (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:44.286854+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 2026-08-30T04:36:26.547789+00:00, confidence not recorded.
  - readme: https://github.com/Harvey-OS/harvey (fetched 2026-08-28T04:04:44.286854+00:00, sha 6b6540431036)
  - homepage: https://harvey-os.org/ (fetched 2026-08-29T11:46:37.633603+00:00, sha bc1fb80db481)
- Data as of 2026-08-30T08:39:29.467469+00:00.