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Developer Tools · head to head

Atlantis vs Miro

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
Miro logo

Miro

Technology

The visual workspace for innovation

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.; Miro free tier limited to 3 editable boards; additional boards must be shared as read-only
  • They diverge on capability: Atlantis covers Pull request plans, Miro covers Infinite canvas.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and Miro actually diverge.

Attributes where Atlantis and Miro differ
AttributeAtlantisMiro
Pricing modelOpen source, no licence feefreemium
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb
CategoryDeveloper ToolsTechnology
FoundedUnknown2011

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 Miro

  • Infinite canvas
  • Real-time collaboration
  • Digital sticky notes
  • Diagramming
  • Mind mapping
  • Video chat
  • Screen sharing
  • Templates

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

Miro

  • Collaborative whiteboarding and diagrammingnot Atlantis
  • Team brainstorming and ideation sessionsnot Atlantis
  • Project planning and workflow visualisationnot Atlantis
  • Remote team collaborationnot 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.

Miro

  • Free tier limited to 3 editable boards; additional boards must be shared as read-only
  • AI credits heavily restricted: 25 credits per member per month on Starter, 50 on Business
  • Enterprise plan requires minimum 30 members
  • Large projects with numerous nested objects may impact performance on lower tiers

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

Miro

Free
  • FreeFree
    • 3 editable boards
    • 7,000+ templates
    • Multiple formats (Docs, Tables, Slides, Kanban)
  • Starter$8/month
    • Unlimited boards
    • Visitor editing
    • High-resolution exports
  • Business$20/month
    • Unlimited workspaces
    • Unlimited guests
    • 4,700+ diagramming shapes
  • Enterprise$null/mo
    • Custom pricing from 30 members
    • Enterprise-grade security
    • Regional data hosting

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 Miro if

  • You need infinite canvas.
  • You want to start without paying.
  • You also want real-time collaboration.
Miro review

Questions people ask

Is Atlantis or Miro better?
Neither clearly leads. Atlantis starts at Free and Miro at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or Miro?
Atlantis starts at Free and Miro at Free.
Does Atlantis or Miro run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. Miro runs on Web.
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 Miro is typically brought in for.
What can Atlantis do that Miro cannot?
Atlantis covers Pull request plans, Comment driven apply, Workspace locking, Policy checking. Miro covers Infinite canvas, Real-time collaboration, Digital sticky notes, Diagramming.

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.

Miro: How much does Miro cost per month?

Miro offers Free (no cost), Starter at $8/month per member (billed yearly), Business at $20/month per member (billed yearly), and Enterprise with custom pricing from 30 members.

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.

Miro: Is there a free version of Miro?

Yes, Miro's Free plan includes 3 editable boards, 7,000+ templates, multiple formats, limited AI trial, 250+ integrations, and 100 MCP calls per day.

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.

Miro: Do organizations get discounts on Miro?

Miro offers education and nonprofit discounts, as well as startup credits of $500-$1,000 for eligible startups.

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.

Miro: How does annual billing compare to monthly billing?

Annual billing saves 20% compared to monthly billing across all paid tiers on Miro.

Source
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