Softwr

Developer Tools · head to head

Atlantis vs Site24x7

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
Site24x7 logo

Site24x7

Technology

All-in-one monitoring for DevOps and IT operations

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.; Site24x7 website and infrastructure monitoring are sold as separate plan tracks; the entry Web Uptime plan ($9/month annual) covers only 25 websites and does not include server monitoring, which requires a separate Lite infrastructure plan
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and Site24x7 actually diverge.

Attributes where Atlantis and Site24x7 differ
AttributeAtlantisSite24x7
Pricing modelOpen source, no licence feesubscription
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 Site24x7

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 Site24x7
  • Removing local applies and the credential sprawl that comes with every engineer holding production keysnot Site24x7
  • Getting pull request driven infrastructure without paying a per-user subscription for a hosted platformnot Site24x7
  • Enforcing Conftest policies as a blocking check before an apply can runnot Site24x7

Site24x7

  • Monitoring uptime and performance from worldwide locationsnot Atlantis
  • Tracking real user performance for each page visitnot Atlantis
  • Monitoring servers across AWS, Azure, GCP environmentsnot Atlantis
  • Identifying code-level bottlenecks through distributed tracingnot Atlantis
  • Detecting anomalies and root causes before impacting usersnot 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.

Site24x7

  • Website and infrastructure monitoring are sold as separate plan tracks; the entry Web Uptime plan ($9/month annual) covers only 25 websites and does not include server monitoring, which requires a separate Lite infrastructure plan
  • Entry infrastructure Lite plan covers only 2 servers and 25 child resources before requiring an upgrade to Professional
  • The discounted monthly-equivalent prices shown (e.g. $9/month for Web Uptime) require annual prepayment; standard monthly billing is priced higher (e.g. $10/month)
  • Enterprise tier pricing starts at $625/month and Enterprise Plus Web at $899/month, both paid annually

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

Site24x7

Free
  • FreeFree
    • Monitor uptime of up to 50 resources
    • Instant downtime email alerts
  • Web Uptime$9/month
    • 25 websites included
    • Annual billing
  • Web Perf$36/month
    • 40 websites
    • 8 transaction monitors
    • Annual billing
  • Enterprise Plus Web$899/month
    • 2,500 websites
    • Enterprise features

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 Site24x7 if

  • You want to start without paying.
Site24x7 review

Questions people ask

Is Atlantis or Site24x7 better?
Neither clearly leads. Atlantis starts at Free and Site24x7 at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or Site24x7?
Atlantis starts at Free and Site24x7 at Free.
Does Atlantis or Site24x7 run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. Site24x7 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 Site24x7 is typically brought in for.
What can Atlantis do that Site24x7 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.

Site24x7: How much does Site24x7 cost?

Site24x7 pricing starts at $9 per month for web monitoring (25 websites) with annual billing, or $10 per month with monthly billing. Enterprise plans scale to $899 per month for website monitoring and $625 per month for infrastructure monitoring.

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.

Site24x7: Does Site24x7 offer a free tier?

Yes, Site24x7 offers a free forever plan allowing users to monitor the uptime of up to 50 resources with instant downtime email alerts. Higher plans provide monitoring for hundreds or thousands of resources with advanced features.

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.

Site24x7: What add-ons are available for Site24x7?

Site24x7 offers modular add-ons including uptime monitors ($18-$140/month), log ingestion ($3-$12 per 10GB monthly), RUM page views ($25-$300/month), and cloud monitoring (starting at $1/resource/month). Pricing varies based on usage and plan tier.

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.

Share

Related pages

More on Atlantis

More on Site24x7

Keep looking

Other head to heads