Atlantis Cloud

Best Self Hosted Alternatives to Atlantis Cloud

A curated collection of the 2 best self hosted alternatives to Atlantis Cloud.

Managed SaaS offering of Atlantis that provides hosted Terraform pull-request automation. Executes terraform plan/apply workflows triggered from VCS, manages state and locking, and integrates with version control and CI systems to automate infrastructure changes.

Alternatives List

#1
Semaphore UI

Semaphore UI

Open-source web UI and API for running Ansible, Terraform/OpenTofu, Bash, and PowerShell tasks with project isolation and access control.

Semaphore UI screenshot

Semaphore UI is a modern web UI for managing popular DevOps tools. It provides a clean interface to run tasks across tooling such as Ansible, Terraform/OpenTofu, Bash, and PowerShell with a focus on clarity and security.

Key Features

  • Easily run Ansible playbooks, Terraform/OpenTofu code, Bash, and PowerShell scripts. (github.com)
  • Receive notifications about failed tasks. (github.com)
  • Project isolation and granular access control. (semaphoreui.com)
  • Intuitive workflow and quick setup. (semaphoreui.com)

Use Cases

  • Orchestrate infrastructure automation with Ansible, Terraform/OpenTofu, and Bash. (github.com)
  • Manage multi-team deployments with project isolation and role-based access. (semaphoreui.com)
  • Track tasks with templates, schedules, and inventories to automate repetitive workloads. (github.com)

Limitations and Considerations

Conclusion

Semaphore UI is an open-source, modern UI for automating DevOps workflows. It combines a Go backend with a Vue.js front-end, runs in Docker/K8s, and supports common databases to fit existing environments. It is backed by an active open-source community and ongoing development. (semaphoreui.com)

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#2
CTFreak

CTFreak

On-premises IT task scheduler to centralize, schedule, and run scripts and commands across servers via SSH/WinRM, with workflows, logs, notifications, and an API.

CTFreak screenshot

CTFreak is an on-premises IT task scheduler designed to centralize scripts and operational jobs in one place, replacing scattered cron jobs and ad-hoc runbooks. It provides a fast, mobile-first web UI to execute tasks locally or remotely across heterogeneous environments.

Key Features

  • Remote executions on multiple nodes via SSH and WinRM, without installing agents
  • Task types for commands, Bash scripts, PowerShell scripts, Ansible playbooks, SQL scripts, and HTTP requests
  • Workflow engine to chain tasks sequentially or concurrently, including nested workflows
  • Team-based organization, centralized execution history, and consolidated logs
  • Notifications and alerting integrations (e.g., email, Slack, Microsoft Teams, Discord, Telegram, Mattermost)
  • Issue tracking integrations (e.g., GitHub, Jira, Linear, YouTrack)
  • SSO support via OpenID Connect
  • REST API plus incoming webhooks for automation and integrations
  • Lightweight resource usage and simple deployment

Use Cases

  • Sysadmin/DevOps job orchestration: maintenance, updates, and operational scripts across fleets
  • Data engineering operations: run long or concurrent imports and calculations on distributed servers
  • Self-service operations for business users: safely trigger pre-defined IT tasks via a web UI

Limitations and Considerations

  • Some advanced capabilities and higher limits (e.g., unlimited tasks, broader notifier quotas) depend on the chosen edition

CTFreak fits teams that want a straightforward, lightweight alternative to heavier runbook automation platforms while keeping strong visibility into job history and failures. It is especially useful in mixed Windows/Linux environments thanks to SSH and WinRM support.

Why choose an open source alternative?

  • Data ownership: Keep your data on your own servers
  • No vendor lock-in: Freedom to switch or modify at any time
  • Cost savings: Reduce or eliminate subscription fees
  • Transparency: Audit the code and know exactly what's running