AWX vs Semaphore UI
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
Semaphore UI
Modern web UI for Ansible, Terraform and more
| Feature | AWX | Semaphore UI |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 76 · Good | 94 · Excellent |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | Apache-2.0 | MIT |
| Language | Python | Go |
| Setup difficulty | Hard | Easy |
| Min. RAM | 4,096 MB | 256 MB |
| Deployment | kubernetes, helm | docker, binary, bare-metal |
| GitHub stars | ★ 15,568 | ★ 14,184 |
| First released | 2017 | 2017 |
| Replaces | Ansible Tower | Ansible Tower, AWX |
What are AWX and Semaphore UI?
AWX
AWX is the open-source upstream project for Red Hat Ansible Automation Platform, providing a web UI, REST API, and task engine for managing Ansible automation. It supports inventory, credentials, and job scheduling.
- Web UI for Ansible
- Job templates and scheduling
- Inventory management
- Role-based access control
Semaphore UI
Semaphore UI is an open-source web interface for running Ansible playbooks, Terraform, OpenTofu, and shell scripts. It provides scheduling, access control, and an audit log for infrastructure automation.
- Web UI for Ansible and Terraform
- Task scheduling
- Role-based access
- Real-time task logs
AWX vs Semaphore UI: key differences
AWX is written in Python, while Semaphore UI is built with Go. Licensing differs — Apache-2.0 for AWX versus MIT for Semaphore UI. Semaphore UI is the lighter option, starting around 256 MB of RAM against 4,096 MB for AWX. Semaphore UI lists first-class Docker deployment; AWX does not.
Why pick each one
Choose AWX if…
- Web UI for Ansible
- Full REST API
- RBAC and scheduling
Watch out for
- Kubernetes required to install
- Resource-heavy stack
Choose Semaphore UI if…
- Lightweight AWX alternative
- Simple single binary
- Supports Terraform and OpenTofu
Watch out for
- Less feature-rich than AWX
- Some features Pro-only
Frequently asked questions
Is AWX or Semaphore UI better?
Neither is universally better. AWX has the larger community, while Semaphore UI is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are AWX and Semaphore UI free and open-source?
Yes. AWX is licensed under Apache-2.0 and Semaphore UI under MIT. Both can be self-hosted at no software cost.
Can I run AWX and Semaphore UI with Docker?
AWX: check the project docs for container support. Semaphore UI: yes.
Which is lighter on resources, AWX or Semaphore UI?
Semaphore UI has the smaller minimum footprint at 256 MB of RAM, compared to about 4,096 MB for AWX. Real-world usage depends on library size, user count, and enabled features.