# chriskohlhoff/asio

Asio C++ Library

Repository: https://github.com/chriskohlhoff/asio
Canonical: https://ross.abutalabs.com/products/asio
Homepage: http://think-async.com/Asio
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-07-18T23:47:27+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 93, release rhythm 35, longevity 100
- inputs: {"age_days": 5678, "days_push": 46, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6175, forks 1550 (observed 2026-08-28T04:09:36.987901+00:00)

## What it is
Asio is a cross-platform C++ library for network and low-level I/O programming that provides a consistent asynchronous model using modern C++. It supplies the basic building blocks for C++ networking, concurrency, and other kinds of I/O, and also ships as Boost.Asio.

## Use cases
- write asynchronous network servers and clients in C++
- build low-level TCP/UDP socket applications
- implement concurrency and timers without threads
- develop cross-platform networking code for Linux, macOS, Windows, and FreeBSD
- build high-performance trading or real-time systems

## When to choose
- you need a mature, battle-tested asynchronous I/O library for C++
- you want minimal dependencies, usable from C++11 onward
- you need consistent networking behavior across platforms
- you are already using Boost and want Boost.Asio integration

## When to avoid
- you want a high-level HTTP framework with routing and middleware out of the box
- your project is not C++ or targets a platform Asio does not support
- you prefer coroutine-only async runtimes with a different programming model

## Facets
- artifact type: library
- maturity: stable
- function: networking, concurrency, http-server, websocket, http-client
- domain: networking, developer-tools, cross-platform
- platform: windows, bsd, cpp, cross-platform
- tags: async-io, sockets, timers, boost, header-only, proactor, linux, macos

## Member repositories
- chriskohlhoff/asio (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:36.987901+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 2026-08-29T17:47:26.181048+00:00, confidence not recorded.
  - readme: https://github.com/chriskohlhoff/asio (fetched 2026-08-28T04:09:36.987901+00:00, sha 12495ce0ada1)
  - homepage: http://think-async.com/Asio (fetched 2026-08-29T08:44:11.364012+00:00, sha a81c52d86d3b)
  - site_page: http://think-async.com/Asio/Documentation.html (fetched 2026-08-29T08:44:11.373132+00:00, sha 684c3df7e810)
- Data as of 2026-08-30T08:39:29.467469+00:00.