What is Atlantis used for?

Atlantis is a self-hosted Go application that automates Terraform through pull requests, running plan and apply remotely and commenting the results back on the PR. It is a good fit for reviewing infrastructure changes in pull requests, letting non-operations engineers propose Terraform changes and standardizing Terraform runs across a team.

Is Atlantis open source?

Yes. Atlantis is open source under the Apache-2.0 licence. Its source code is on GitHub at runatlantis/atlantis and is written mainly in Go.

Yes. Atlantis is open source, so the software itself is free to use.

Can I self-host Atlantis?

Yes. Atlantis can be self-hosted on your own server or infrastructure.

What is Atlantis an alternative to?

Atlantis is an open-source alternative to HCP Terraform, Spacelift, env0 and Scalr. Other open-source alternatives to HCP Terraform include Semaphore UI, Burrito and OpenTofu.

Is Atlantis actively maintained?

Yes. The most recent commit to Atlantis was on 2 October 2026, and the latest release is v0.48.0, published on 22 September 2026. The project has 9.3k stars on GitHub.

Atlantis: open-source alternative to HCP Terraform

About Atlantis

Atlantis is a self-hosted application written in Go that automates Terraform through pull requests. It listens for pull request events delivered by webhooks, runs terraform plan, import and apply on a server, and then comments the output back on the pull request.

Moving these steps into the review flow makes Terraform changes visible to the whole team and lets engineers who are not operations specialists collaborate on infrastructure. It also helps standardize how Terraform is run, since everyone's changes go through the same remote workflow rather than from individual laptops. The project documents a getting-started guide, full documentation and release downloads, and community help comes through Slack.

Atlantis is licensed under Apache-2.0 and you run it yourself, which is why it is often grouped with Terraform automation and collaboration tools. It suits platform and SRE teams managing infrastructure as code with a Git-based review workflow.

Key features

Runs Terraform plan from pull requests
Remote apply and import commands
Posts command output as PR comments
Webhook-driven Git integration
Single self-hosted Go binary
Shared Terraform workflow for teams

Good fit for

→Reviewing infrastructure changes in pull requests
→Letting non-operations engineers propose Terraform changes
→Standardizing Terraform runs across a team

Built with: Go
Tags: terraform; gitops; pull-requests; devops; infrastructure-as-code; automation; self-hosted; golang

Atlantis: questions and answers

What is Atlantis used for?: Atlantis is a self-hosted Go application that automates Terraform through pull requests, running plan and apply remotely and commenting the results back on the PR. It is a good fit for reviewing infrastructure changes in pull requests, letting non-operations engineers propose Terraform changes and standardizing Terraform runs across a team.
Is Atlantis open source?: Yes. Atlantis is open source under the Apache-2.0 licence. Its source code is on GitHub at runatlantis/atlantis and is written mainly in Go.
Is Atlantis free?: Yes. Atlantis is open source, so the software itself is free to use.
Can I self-host Atlantis?: Yes. Atlantis can be self-hosted on your own server or infrastructure.
What is Atlantis an alternative to?: Atlantis is an open-source alternative to HCP Terraform, Spacelift, env0 and Scalr. Other open-source alternatives to HCP Terraform include Semaphore UI, Burrito and OpenTofu.
Is Atlantis actively maintained?: Yes. The most recent commit to Atlantis was on 2 October 2026, and the latest release is v0.48.0, published on 22 September 2026. The project has 9.3k stars on GitHub.