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Developer Tools · head to head

Atlantis vs Microsoft Edge

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
Microsoft Edge logo

Microsoft Edge

Technology

Microsoft's Chromium-based browser, distinguished by IE mode for legacy applications and by its integration with Microsoft 365 management.

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.; Microsoft Edge outside the European Economic Area, Edge cannot be uninstalled from Windows, and Windows components such as Widgets, help links and taskbar search results open in it whatever the default browser is set to, so an organisation standardising on Chrome still has to manage and patch Edge.
  • They diverge on capability: Atlantis covers Pull request plans, Microsoft Edge covers Internet Explorer mode.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and Microsoft Edge actually diverge.

Attributes where Atlantis and Microsoft Edge differ
AttributeAtlantisMicrosoft Edge
Pricing modelOpen source, no licence feefree
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb
CategoryDeveloper ToolsTechnology

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 Microsoft Edge

  • Internet Explorer mode
  • Enterprise Mode Site List
  • Entra ID integration
  • Purview DLP for browsing
  • Intune and Group Policy
  • Vertical tabs and Workspaces
  • Sleeping tabs
  • Chrome extension compatibility

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

Microsoft Edge

  • A Windows estate with intranet applications that still require Internet Explorer, where IE mode buys years before a rewritenot Atlantis
  • Microsoft 365 organisations that want browser sessions covered by Purview DLP and conditional access without a separate secure browser productnot Atlantis
  • Fleets managed through Intune that need one browser configured by the same console as the rest of the desktopnot Atlantis
  • Users who work with many tabs at once and want vertical tabs and automatic tab suspension without installing extensionsnot 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.

Microsoft Edge

  • Outside the European Economic Area, Edge cannot be uninstalled from Windows, and Windows components such as Widgets, help links and taskbar search results open in it whatever the default browser is set to, so an organisation standardising on Chrome still has to manage and patch Edge.
  • It is Chromium downstream, so Manifest V3 applies exactly as it does in Chrome; full-strength blocking extensions cannot run, and Microsoft's add-ons store adds a second review process rather than a workaround.
  • Almost all of its advantage is conditional on Microsoft 365 and Entra ID; a Google Workspace or AWS-centred organisation gets Chromium plus Microsoft's promotional surfaces and none of the Purview, Intune or conditional access value.
  • Consumer-facing features including Copilot, the Discover pane, shopping notifications and sidebar apps default to on and reappear after feature updates, so suppressing them requires a maintained policy set rather than a one-off configuration.
  • IE mode is a bridge with a maintenance owner attached: the Enterprise Mode Site List must be curated by somebody, and MSHTML receives security fixes but no new capability, so an application parked there gains nothing and its eventual rewrite is only deferred.
  • By default browsing data feeds Microsoft services for Copilot, Discover and shopping features, which in a regulated environment turns the deployment into a policy exercise before it can be approved.

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

Microsoft Edge

Free

No published plan breakdown. See the Microsoft Edge review.

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 Microsoft Edge if

  • You need internet explorer mode.
  • You want to start without paying.
  • You also want enterprise mode site list.
Microsoft Edge review

Questions people ask

Is Atlantis or Microsoft Edge better?
Neither clearly leads. Atlantis starts at Free and Microsoft Edge at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or Microsoft Edge?
Atlantis starts at Free and Microsoft Edge at Free.
Does Atlantis or Microsoft Edge run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. Microsoft Edge 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 Microsoft Edge is typically brought in for.
What can Atlantis do that Microsoft Edge cannot?
Atlantis covers Pull request plans, Comment driven apply, Workspace locking, Policy checking. Microsoft Edge covers Internet Explorer mode, Enterprise Mode Site List, Entra ID integration, Purview DLP for browsing.

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.

Microsoft Edge: Can I uninstall Edge from Windows?

In the European Economic Area, yes, because the Digital Markets Act requires it. Elsewhere you cannot, and several Windows components will continue to open it regardless of your default browser.

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.

Microsoft Edge: How long will Internet Explorer mode be supported?

Microsoft has committed to supporting IE mode in Edge through at least 2029. It is a migration window rather than a permanent home, since the underlying MSHTML engine gets security fixes but no new capability.

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.

Microsoft Edge: Do Chrome extensions work?

Yes. Edge installs extensions from the Chrome Web Store as well as its own store. Manifest V3 restrictions apply identically, so extensions that Chrome no longer supports do not work here either.

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.

Microsoft Edge: Is it worth deploying if we are not a Microsoft 365 organisation?

Usually not for the management features, which depend on Entra ID, Intune and Purview. Without that stack it is Chromium with a different interface and additional Microsoft promotion.

Microsoft Edge: Does it run on Linux?

Yes, there are official Linux builds. Some Windows-specific features, including IE mode, are not available there.

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