Atlantisvs
HCP Terraform
HCP Terraform: Managed runs, state and policy with a vendor contract, when self-hosting the webhook server is unacceptable
Atlantis
Runs Terraform plan and apply from pull request comments, self-hosted and free
As of 31 August 2026, Atlantis is free to use. Atlantis watches pull requests, runs the plan and posts the output as a comment so review happens against the actual diff rather than a description of it. Softwr lists it under Developer Tools. Atlantis is made by Atlantis (community project under LF Projects, LLC), available on Linux, Docker, Kubernetes, Self-hosted.
Overview
What Atlantis does
Atlantis is a self-hosted Go application that receives webhooks from GitHub, GitLab, Bitbucket or Azure DevOps, runs Terraform or OpenTofu operations on a server you control, and writes the results back to the pull request. Developers then type atlantis apply as a comment to execute. Because plan output lands in the review thread, the change a reviewer approves is the change that runs, which removes the most common failure in Terraform review: approving a description of a plan somebody ran locally. It supports workspace locking, autoplanning, automerging and Conftest policy checks. The governance is unusual and worth stating plainly. There is no company. The project operates as a series of LF Projects under the Linux Foundation umbrella and is powered by volunteer contributions. It is not a CNCF project, despite using a channel in the CNCF Slack, which is easy to misread. The maintainer file lists six people employed at six different and unrelated organisations, which is a genuinely better continuity position than a single-vendor open source tool where the vendor can relicense or pivot. Against that, there is no GOVERNANCE file in the repository, so succession and decision-making are informal, and the repository shows around 9,300 stars, over 400 contributors and version 0.47.1 released in August 2026. Buyers are infrastructure teams that want pull request driven Terraform without a per-user subscription and are willing to run and secure the server. The trade-off is that this component holds privileged cloud credentials on an internet-reachable webhook endpoint, and authorisation is driven by pull request comments, which is coarse compared with a policy engine. It is also stateful, holding a working directory and lock database on local disk, which makes high availability awkward. Compared with commercial alternatives it has no drift detection, no cost estimation and no managed state interface, and Terragrunt or monorepo layouts require hand-written workflow configuration that grows with the repository count.
What people use it for
- Making Terraform review meaningful by putting the actual plan output in front of the approver
- Removing local applies and the credential sprawl that comes with every engineer holding production keys
- Getting pull request driven infrastructure without paying a per-user subscription for a hosted platform
- Enforcing Conftest policies as a blocking check before an apply can run
Related searches
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Atlantis.
- There is no company, no service level agreement and no paid support at any price, and the six maintainers are volunteers with day jobs, which some risk committees will not accept for a component holding production cloud credentials.
- The security surface is inherently sharp, because it is an internet-reachable webhook endpoint that executes applies with privileged credentials, gated by pull request comment authorisation that is coarse next to a real policy engine.
- It is stateful, holding a working directory and lock database on local disk, so high availability and horizontal scaling are awkward and you own upgrades, webhook plumbing, secret rotation and the host itself.
- It lacks the features that distinguish the commercial alternatives, with no native drift detection, no cost estimation, no managed state interface and no policy engine beyond the Conftest integration.
- Terragrunt and monorepo layouts are not first-class, requiring hand-written custom workflows and repository configuration that becomes a growing maintenance burden as the number of repositories increases.
Cross-shopped
What people choose instead of Atlantis
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- AtlantisvsHarness
Harness: Broader delivery platform if infrastructure pipelines sit alongside application deployment
- AtlantisvsPulumi
Pulumi: Choose this instead if you would rather define infrastructure in a general purpose language
Pricing
What Atlantis costs
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Atlantis
Free
- Apache-2.0, no usage limits and no seat count
- No commercial edition and no paid support tier
- Community support through GitHub and the CNCF Slack channel
- Your cost is the server it runs on and the staff time to operate it
Capabilities
Features
Pull request plans
Runs plan automatically when infrastructure code changes and posts output as a comment
Comment driven apply
Executes apply when an authorised reviewer comments on the pull request
Workspace locking
Prevents two pull requests planning against the same state at once
Policy checking
Conftest integration so policy failures block an apply
Multi-platform webhooks
Works with GitHub, GitLab, Bitbucket and Azure DevOps
Custom workflows
Per-repository configuration for non-standard directory layouts and tooling
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
Is there a company behind Atlantis?
No. It runs as a series of LF Projects under the Linux Foundation and is maintained by volunteers. There is no vendor to buy support from and no service level agreement.
Is it a CNCF project?
No. It uses a channel in the CNCF Slack, which is often misread as membership, but the project sits under LF Projects rather than the CNCF.
Does it work with OpenTofu?
Yes, there is a dedicated integration guide alongside Terraform, and it also has configuration for working with hosted Terraform backends.
What does it not do that a paid platform does?
Drift detection, cost estimation, a managed state and run interface, and a real policy engine. Atlantis does pull request plan and apply well and stops there.
Keep looking
Where to go from Atlantis
- Atlantis alternativesEvery product people weigh against it
- Atlantis pricingPlans, floors and what the tiers exclude
- Atlantis badgesWhich rules it meets, and the figure behind each
- All Developer Tools softwareThe full category
- Best Developer Tools softwareThe shortlist, and how it was cut
Best Developer Tools software for
Compare Atlantis with
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- HCP Terraform
- Harness
- Jitsu
- Visual Studio Code
- Tilt
- Soketi
- Pants Build
- Steampipe
- Refact
- Penpot
- GNU Emacs
- Okteto
- OpsLevel
- PartyKit
- PhpStorm
- Pieces for Developers
- RAD Studio
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Softwr does not host reviews and shows no star rating for Atlantis, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
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Atlantis badge
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