# concourse/concourse

Concourse is a container-based automation system written in Go. It's mostly used for CI/CD.

Repository: https://github.com/concourse/concourse
Canonical: https://ross.abutalabs.com/products/concourse
Homepage: https://concourse-ci.org
Language: Go
License: Apache-2.0
License Family: permissive
Topics: go, ci, pipelines, elm, concourse, continuous-integration, continuous-delivery, ci-cd, containerd, containers, runc
Last push: 2026-08-26T22:05:20+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 4519, "days_push": 7, "days_rel": 20, "gap_med": 17.0, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7893, forks 897 (observed 2026-08-28T04:10:08.730481+00:00)

## What it is
Concourse is an open-source, container-based automation system written in Go, primarily used for CI/CD. Pipelines are defined declaratively in YAML around resources, jobs, and tasks, with everything running in containers on stateless workers and managed via the fly CLI.

## Use cases
- set up a self-hosted CI/CD server for my repos
- run build and test pipelines in containers
- automate deployments triggered by git commits
- define pipelines as code committed to source control
- visualize job dependencies as a pipeline graph
- schedule recurring automation jobs
- build and push docker images in a pipeline

## When to choose
- you want a self-hosted, container-isolated CI/CD system with declarative, source-controlled pipeline config
- you value reproducible, idempotent builds and stateless workers
- you need pipeline visualization and a dependency-graph model of jobs and resources
- you want automation beyond CI/CD (any pipeline-based 'continuous thing-doing')

## When to avoid
- you want a quick, low-learning-curve CI tool - Concourse has a deliberately steep initial learning curve
- you need macOS or Windows resource types - resources only run on Linux workers
- you prefer plugin-heavy, batteries-included CI with GUI-based configuration
- you need a fully managed/SaaS CI service

## Facets
- artifact type: application
- maturity: active
- function: ci-cd, workflow-automation, container-runtime, scheduling, cli, self-hosted
- domain: developer-tools
- platform: windows, self-hosted, go
- tags: continuous-integration, continuous-delivery, pipeline, fly-cli, declarative-config, reproducible-builds, elm-ui, devops, automation, containers, linux, macos, docker, kubernetes

## Member repositories
- concourse/concourse (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:08.730481+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 2026-08-29T17:33:29.559079+00:00, confidence not recorded.
  - readme: https://github.com/concourse/concourse (fetched 2026-08-28T04:10:08.730481+00:00, sha a74e0dd0ca84)
  - homepage: https://concourse-ci.org (fetched 2026-08-29T08:30:14.162006+00:00, sha 6ca9d9cb1c23)
  - site_page: https://concourse-ci.org/docs/getting-started (fetched 2026-08-29T08:30:14.174849+00:00, sha cf0617786936)
  - site_page: https://concourse-ci.org/docs (fetched 2026-08-29T08:30:14.173266+00:00, sha 6fb5861c64ae)
  - site_page: https://concourse-ci.org/docs/getting-started/quick-start (fetched 2026-08-29T08:30:14.176362+00:00, sha 411f3b3e08cb)
  - site_page: https://concourse-ci.org/docs/getting-started/hello-world (fetched 2026-08-29T08:30:14.178059+00:00, sha 3e7c19d6b475)
  - site_page: https://concourse-ci.org/docs/getting-started/inputs-outputs (fetched 2026-08-29T08:30:14.179916+00:00, sha b4a51a4da5ee)
  - site_page: https://concourse-ci.org/docs/getting-started/resources (fetched 2026-08-29T08:30:14.182028+00:00, sha b42ecc6d9f41)
  - site_page: https://concourse-ci.org/docs/install (fetched 2026-08-29T08:30:14.184214+00:00, sha c3100a6eb63c)
  - site_page: https://concourse-ci.org/blog/2026-08-12-v830-release (fetched 2026-08-29T08:30:14.171160+00:00, sha 35fd958ae820)
- Data as of 2026-08-30T08:39:29.467469+00:00.