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Developer Tools · head to head

Atlantis vs OneTrust

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
OneTrust logo

OneTrust

Cybersecurity

Enterprise AI governance and data compliance platform.

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Atlantis has a free tier, so it costs nothing to try first.
  • 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.; OneTrust complex usage-based pricing model with multiple meters (admin users, inventory size, daily visitors, data subjects) making total cost unpredictable
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and OneTrust actually diverge.

Attributes where Atlantis and OneTrust differ
AttributeAtlantisOneTrust
Starting priceFreeOn request
Pricing modelOpen source, no licence feeusage-based
Free tierYesNo
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, API, Cloud
CategoryDeveloper ToolsCybersecurity

Identical on both: 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 OneTrust

Nothing recorded that Atlantis does not also cover.

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 OneTrust
  • Removing local applies and the credential sprawl that comes with every engineer holding production keysnot OneTrust
  • Getting pull request driven infrastructure without paying a per-user subscription for a hosted platformnot OneTrust
  • Enforcing Conftest policies as a blocking check before an apply can runnot OneTrust

OneTrust

  • Fortune 500 enterprises managing multi-framework compliance (GDPR, SOC 2, EU AI Act, DORA, NIS2)not Atlantis
  • Organisations implementing responsible AI governance and monitoring AI systemsnot Atlantis
  • Companies with global data operations requiring consent and privacy automation at scalenot Atlantis
  • Enterprises managing complex vendor ecosystems with third-party risk assessmentnot Atlantis
  • Regulated industries (finance, healthcare, insurance) requiring continuous compliancenot 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.

OneTrust

  • Complex usage-based pricing model with multiple meters (admin users, inventory size, daily visitors, data subjects) making total cost unpredictable
  • No published pricing examples or per-unit costs; all pricing requires custom quotes
  • Each solution area uses different pricing metrics, requiring complex calculations for multi-solution purchases
  • Enterprise-only positioning (Fortune 500 focus) suggests premium pricing, discouraging mid-market or startup adoption
  • Platform complexity and multiple solution areas may result in significant implementation and ongoing costs not disclosed upfront

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

OneTrust

On request
  • AI Governance$undefined/variable
    • Pricing by admin users and AI inventory size
    • AI compliance lifecycle management
    • Control enforcement and monitoring
  • Consent & Preferences$undefined/variable
    • CMP Base: priced by average daily visitors
    • CMP Suite: expanded privacy experiences
    • Universal Consent: metered by data subject profiles
  • Privacy Automation$undefined/variable
    • Priced by users and privacy asset inventory
    • Internal operations automation
    • Data subject request handling
  • Tech Risk & Compliance$undefined/variable
    • Governance and risk management across 50+ standards
    • Priced by admin users and asset inventory

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 OneTrust if

  • You work on Web, API, Cloud.
OneTrust review

Questions people ask

Is Atlantis or OneTrust better?
Neither clearly leads. Atlantis starts at Free and OneTrust at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or OneTrust?
Atlantis has a free tier; the other does not. Paid plans start at Free for Atlantis and On request for OneTrust.
Does Atlantis or OneTrust run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. OneTrust runs on Web, API, Cloud.
Can I use Atlantis for free?
Yes. Atlantis has a free tier, so you can try it without paying. OneTrust starts at On request.
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 OneTrust is typically brought in for.
What can Atlantis do that OneTrust cannot?
Atlantis covers Pull request plans, Comment driven apply, Workspace locking, Policy checking.

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.

OneTrust: How many case studies does OneTrust have?

OneTrust showcases 74+ customer case studies across multiple industries and regions, with examples from banking, insurance, hospitality and technology.

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.

OneTrust: What compliance standards does OneTrust support?

OneTrust covers tech risk and compliance across 50+ standards including GDPR, SOC 2, EU AI Act, DORA and NIS2.

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.

OneTrust: Does OneTrust automate data detection?

Yes. OneTrust automatically detects and classifies sensitive data across 200+ connectors, identifying where data lives and what regulatory requirements apply.

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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