# joyent/libuv

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Repository: https://github.com/joyent/libuv
Canonical: https://ross.abutalabs.com/products/joyent-libuv
Homepage:  https://github.com/libuv/libuv
Language: C
License Family: other
Archived: true
Last push: 2015-06-27T11:45:00+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5636, "days_push": 4085, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3243, forks 637 (observed 2026-08-28T04:07:50.595668+00:00)

## What it is
libuv is a multi-platform C library focused on asynchronous I/O, providing an event loop backed by epoll, kqueue, and IOCP, plus async TCP/UDP sockets, DNS resolution, and file system operations. It was originally developed for Node.js and is also used by Luvit, Julia, and uvloop.

## Use cases
- build an event loop for a cross-platform C application
- asynchronous TCP and UDP networking in C
- async file system operations with file change events
- embed an event loop in a language runtime like Node.js or Julia
- cross-platform async DNS resolution

## When to choose
- you need a battle-tested, portable async I/O event loop in C
- you are building a runtime or server that needs epoll/kqueue/IOCP abstraction
- you want the actively maintained successor at libuv/libuv

## When to avoid
- you want active development - this joyent mirror is abandoned; use libuv/libuv instead
- you need high-level async APIs in a managed language rather than a C library
- you need only simple blocking I/O without an event loop

## Facets
- artifact type: library
- maturity: abandoned
- function: concurrency, networking, file-system, developer-tools
- domain: developer-tools, cross-platform, microservices
- platform: windows, cross-platform, c
- tags: event-loop, asynchronous-io, nodejs, moved-repository, systems-programming, linux, macos

## Member repositories
- joyent/libuv (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:50.595668+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 2026-08-30T07:24:30.004444+00:00, confidence not recorded.
  - readme: https://github.com/joyent/libuv (fetched 2026-08-28T04:07:50.595668+00:00, sha 85d9cad3afca)
  - homepage:  https://github.com/libuv/libuv (fetched 2026-08-29T09:37:10.513414+00:00, sha dfcca7f8fb56)
- Data as of 2026-08-30T08:39:29.467469+00:00.