Semaphore UI

Semaphore UI is an open-source automation platform that provides a powerful and intuitive web interface for managing infrastructure with both Ansible and OpenTofu/Terraform.

Built for DevOps engineers, system administrators, and platform teams, Semaphore UI simplifies complex infrastructure workflows — all from a lightweight, team-friendly web app.

Key Features

• Multi-Tool Support – Automate infrastructure using Ansible, OpenTofu, or Terraform with a single UI.
• Real-Time Job Execution – Run playbooks and plans with live logs and status updates.
• Reusable Templates – Create task templates with dynamic inputs and parameters.
• Inventory & Workspace Management – Manage Ansible inventories and Terraform workspaces in one place.
• Secrets Management – Securely store SSH keys, API tokens, and environment variables.
• Role-Based Access Control (RBAC) – Control access at the project, team, and environment level.
• Lightweight & Self-Hosted – Easy to deploy anywhere, from your laptop to a production server.

Use Cases

• Automate cloud provisioning and application deployment
• Manage infrastructure as code (IaC) using Ansible and Terraform/OpenTofu
• Enable self-service automation for internal teams
• Visualize and monitor infrastructure changes in real-time