# semaphoreui/semaphore

Modern UI and powerful API for Ansible, Terraform/OpenTofu/Terragrunt, PowerShell and other DevOps tools.

Repository: https://github.com/semaphoreui/semaphore
Canonical: https://ross.abutalabs.com/products/semaphore
Homepage: https://semaphoreui.com
Language: Go
License: MIT
License Family: permissive
Topics: ansible, devops, ci, cicd, opentofu, terraform, terraform-ui, awx, jenkins, docker, docker-ui, terragrunt, pulumi, go, golang
Last push: 2026-08-26T23:32:54+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 4393, "days_push": 7, "days_rel": 6, "gap_med": 2, "n_releases_24m": 98}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 14058, forks 1292 (observed 2026-08-28T04:11:05.416491+00:00)

## What it is
Semaphore UI is an open-source, self-hosted web UI and API for running Ansible playbooks, Terraform/OpenTofu/Terragrunt, Bash, PowerShell, and Python automation from a central interface. Written in Go, it provides projects, task templates, scheduling, inventories, secret management, RBAC, and runners for team-based infrastructure automation.

## Use cases
- run ansible playbooks from a web ui
- self-hosted terraform automation server
- schedule recurring infrastructure tasks
- manage ansible inventories and secrets centrally
- alternative to awx or jenkins for deployment automation
- trigger devops automation via api
- control team access to infrastructure tasks with rbac

## When to choose
- you need a modern web UI to run Ansible, Terraform/OpenTofu, or shell scripts without giving users CLI access
- you want scheduling, execution history, logs, and notifications for automation tasks
- you need centralized inventory, secrets, and access control for a DevOps team
- you want a lightweight single-binary or Docker-deployable automation server

## When to avoid
- you need full CI/CD pipeline features like build artifacts and test stages - use Jenkins or GitLab CI
- you only run automation from a terminal and don't need a UI or API
- you require high availability or isolated project runners on the free tier - those are Pro/Enterprise features

## Facets
- artifact type: application
- maturity: active
- function: web-framework, api-framework, infrastructure-as-code, deployment, scheduling, secrets-management, workflow-automation, self-hosted, developer-tools
- domain: infrastructure-as-code, self-hosted, cloud-computing
- platform: windows, self-hosted, go
- tags: ansible-ui, terraform-ui, opentofu, terragrunt, awx-alternative, jenkins-alternative, automation-server, rbac, runners, helm-chart, devops, automation, linux, macos, docker, kubernetes, web-server

## Member repositories
- semaphoreui/semaphore (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:05.416491+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 2026-08-29T17:12:50.532901+00:00, confidence not recorded.
  - readme: https://github.com/semaphoreui/semaphore (fetched 2026-08-28T04:11:05.416491+00:00, sha 89fdaaeb19a5)
  - homepage: https://semaphoreui.com (fetched 2026-08-29T08:06:48.250496+00:00, sha 83f754e9c609)
  - site_page: https://semaphoreui.com/features (fetched 2026-08-29T08:06:48.261779+00:00, sha f0e08ce2717d)
  - site_page: https://semaphoreui.com/install (fetched 2026-08-29T08:06:48.265194+00:00, sha 721d04f9d65a)
  - site_page: https://semaphoreui.com/docs (fetched 2026-08-29T08:06:48.266867+00:00, sha 7e2054989107)
  - site_page: https://semaphoreui.com/api-docs (fetched 2026-08-29T08:06:48.268792+00:00, sha 3aec60d6c7d7)
  - site_page: https://semaphoreui.com/pricing (fetched 2026-08-29T08:06:48.263303+00:00, sha cf2ece41d555)
  - site_page: https://semaphoreui.com/releases/semaphore-v2_18 (fetched 2026-08-29T08:06:48.259998+00:00, sha e75b527b7fd1)
  - site_page: https://semaphoreui.com/releases (fetched 2026-08-29T08:06:48.270450+00:00, sha eb155626bfdc)
- Data as of 2026-08-30T08:39:29.467469+00:00.