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Developer Tools · head to head

Atlantis vs Snyk

Atlantis logo

Atlantis

Developer Tools

Runs Terraform plan and apply from pull request comments, self-hosted and free

From
Free
Free plan
Yes
Full reviewWebsite
Snyk logo

Snyk

Cybersecurity

Developer-first security platform

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: 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.; Snyk free plan has strict test limits across all modules: Open Source (200), Code (100), Infrastructure as Code (300), Container (100) tests per month
  • They diverge on capability: Atlantis covers Pull request plans, Snyk covers Open source security.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and Snyk actually diverge.

Attributes where Atlantis and Snyk differ
AttributeAtlantisSnyk
Pricing modelOpen source, no licence feefreemium
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, CLI, IDE integrations
CategoryDeveloper ToolsCybersecurity
FoundedUnknown2015

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Atlantis

  • Pull request plans
  • Comment driven apply
  • Workspace locking
  • Policy checking
  • Multi-platform webhooks
  • Custom workflows

Only in Snyk

  • Open source security
  • Code security (SAST)
  • Container security
  • IaC security
  • License compliance
  • Fix PRs
  • Priority scoring
  • Developer IDE integration

What people use each for

The jobs each tool is most often brought in to do.

Atlantis

  • Making Terraform review meaningful by putting the actual plan output in front of the approvernot Snyk
  • Removing local applies and the credential sprawl that comes with every engineer holding production keysnot Snyk
  • Getting pull request driven infrastructure without paying a per-user subscription for a hosted platformnot Snyk
  • Enforcing Conftest policies as a blocking check before an apply can runnot Snyk

Snyk

  • Vulnerability scanningnot Atlantis
  • Application securitynot Atlantis
  • Infrastructure as Code securitynot Atlantis
  • Container securitynot Atlantis

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

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.

Snyk

  • Free plan has strict test limits across all modules: Open Source (200), Code (100), Infrastructure as Code (300), Container (100) tests per month
  • Free and Team plans count only contributing developers making commits within 90 days; public contributions do not count
  • Enterprise plan requires custom pricing and sales contact

Pricing, plan by plan

Atlantis

Free
  • AtlantisFree
    • 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

Snyk

Free
  • FreeFree
    • SCA scanning
    • SAST scanning
    • IaC and Container scanning
  • Team$25/month
    • 1000 Code tests
    • 100 projects
    • Jira integration
  • Ignite$105/month
    • Unlimited tests
    • Unlimited projects
    • Custom security rules
  • Enterprise$null/custom
    • Zero-day prevention
    • Unified AppSec control
    • Full SDLC automation

Which should you pick?

Choose Atlantis if

  • You need pull request plans.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want comment driven apply.
Atlantis review

Choose Snyk if

  • You need open source security.
  • You want to start without paying.
  • You work on Web, CLI, IDE integrations.
  • You also want code security (sast).
Snyk review

Questions people ask

Is Atlantis or Snyk better?
Neither clearly leads. Atlantis starts at Free and Snyk at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or Snyk?
Atlantis starts at Free and Snyk at Free.
Does Atlantis or Snyk run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. Snyk runs on Web, CLI, IDE integrations.
Can I use Atlantis for free?
Both have a free tier, so you can try either at no cost before committing.
What is Atlantis best used for?
Atlantis is most often used 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. Of those, making terraform review meaningful by putting the actual plan output in front of the approver and removing local applies and the credential sprawl that comes with every engineer holding production keys are not what Snyk is typically brought in for.
What can Atlantis do that Snyk cannot?
Atlantis covers Pull request plans, Comment driven apply, Workspace locking, Policy checking. Snyk covers Open source security, Code security (SAST), Container security, IaC security.

Answered from the vendors’ own pages

Atlantis: 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.

Snyk: How much does Snyk cost?

Snyk offers a free plan with limited tests, Team plan at $25/month per contributing developer, Ignite at $1260/year, and custom Enterprise pricing. Contributing developers are those who made commits to private repos within the last 90 days.

Source
Atlantis: 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.

Snyk: What does Snyk's Team plan include?

The Team plan at $25/month includes 1000 Code tests, up to 100 projects, Jira integration, next business day support, and all features from the free plan including SCA, SAST, IaC and Container scanning.

Source
Atlantis: 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.

Snyk: Is there a free version of Snyk?

Yes, Snyk offers a free plan with full platform access including SCA, SAST, IaC and Container scanning. The free tier includes 200 Open Source tests, 100 Code tests, 300 IaC tests, 100 Container tests, and up to 5 projects.

Source
Atlantis: 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.

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