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Semaphore UI logo

Semaphore UI

Self-hosted UI and API for Ansible, Terraform, and scripts

paidopen sourceupdated Jul 8, 2026

Semaphore UI provides a web interface and REST API for running Ansible playbooks, Terraform and OpenTofu configurations, Bash scripts, and PowerShell commands from a centralized self-hosted platform. With over 13,000 GitHub stars and 2 million Docker pulls, it replaces AWX and manual terminal execution with a polished dashboard for scheduling, access control, notifications, and execution history across mixed infrastructure automation environments.

Semaphore UI centralizes infrastructure automation by providing a single web-based control plane for tools that typically run from isolated terminal sessions. Ansible playbooks, Terraform and OpenTofu configurations, Bash scripts, and PowerShell commands all execute through the same interface with consistent logging, scheduling, and access controls. The role-based permission system lets teams define who can run which automation tasks, reducing the risk of unauthorized infrastructure changes while maintaining operational velocity.

The scheduling engine supports cron-based recurring tasks for routine maintenance operations, while webhook endpoints enable event-driven execution triggered by CI/CD pipelines or external monitoring systems. Execution history provides a complete audit trail of every automation run with output logs, timing data, and user attribution. Notification integrations with Slack, email, and webhook targets keep teams informed about task outcomes without requiring them to monitor the dashboard continuously.

With over 13,000 GitHub stars, 2 million Docker pulls, and 20,000+ installations, Semaphore UI has proven reliable across diverse infrastructure environments. The MIT-licensed community edition covers core automation needs, while Pro and Enterprise tiers add advanced features for larger organizations. The self-hosted deployment model appeals to teams that need full control over their automation infrastructure, and the single-binary architecture with embedded SQLite simplifies initial setup compared to heavier alternatives like AWX that require multiple services.

Pricing

Free community edition; Pro and Enterprise paid tiers

Platforms

Self-hosted on Linux, macOS; Docker available

Categories

Tags

Use Cases

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FAQ

What is Semaphore UI?

Semaphore UI provides a web interface and REST API for running Ansible playbooks, Terraform and OpenTofu configurations, Bash scripts, and PowerShell commands from a centralized self-hosted platform. With over 13,000 GitHub stars and 2 million Docker pulls, it replaces AWX and manual terminal execution with a polished dashboard for scheduling, access control, notifications, and execution history across mixed infrastructure automation environments.

Is Semaphore UI free?

No — Semaphore UI is a paid tool. Free community edition; Pro and Enterprise paid tiers

Is Semaphore UI open source?

Yes — Semaphore UI is open source.

What are the best Semaphore UI alternatives?

The top editor-verified Semaphore UI alternatives are Terragrunt, Dstack, Teleport Beams.