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Runatlantis (Atlantis) vs Gruntwork

Runatlantis (Atlantis) and Gruntwork both land on Depends.

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Runatlantis (Atlantis) versus Gruntwork
CompareRunatlantis (Atlantis)Gruntwork
VerdictDependsDepends
Best forTeams of 3+ engineers on TerraformAWS-heavy teams launching production infra fast
Who it's not forSolo developers . running terraform plan locally is enoughSmall teams with one simple AWS account
PrivacyActive advisory stream: auth bypass, path traversal (CVSS 8.1), and info exposure fixed across 2025-2026 releases . patch promptly.⁸One medium CVE in Terragrunt (CVE-2026-45099) and one dependency issue tracked; no breach reports; offers HIPAA/HITRUST and FedRAMP-ready stacks.
Support qualityGuess: community GitHub support, no SLANo support evidence in sources
Public sentimentUsers on Reddit actively champion Atlantis for Terraform PR automation, though some hesitate about self-hosting responsibilities.⁵Reddit DevOps threads show teams actively debating whether Gruntwork's paid library beats free community modules, with several reporting production use.
Biggest gotchaFour public security advisories in 2025-2026; track releases and patch fastPricing details thin in public sources; confirm per-seat costs during evaluation.13

Pick Runatlantis (Atlantis) when

  • Teams of 3+ engineers on Terraform
  • PR-driven plan/apply workflows
  • Cost-conscious orgs avoiding per-user IaC pricing
  • Shops keeping cloud credentials in-house

When Runatlantis (Atlantis) is not a fit

  • Solo developers . running terraform plan locally is enough
  • Small teams wanting a zero-ops managed platform
  • Orgs needing SLA-backed vendor support
  • Teams with nobody to patch and monitor a server

Pick Gruntwork when

  • AWS-heavy teams launching production infra fast
  • Terraform shops wanting vetted prebuilt modules
  • HIPAA/FedRAMP-bound AWS workloads
  • Terragrunt users scaling multi-account setups

When Gruntwork is not a fit

  • Small teams with one simple AWS account
  • GCP- or Azure-only shops
  • Teams not standardized on Terraform
  • Budget buyers happy with free community modules

Sources

  1. Atlantis official siterunatlantis.io
    official
  2. runatlantis/atlantis on GitHubgithub.com
    official
  3. Conftest Policy Checking docsrunatlantis.io
    official
  4. Atlantis deployment docs (Helm/K8s)github.com
    official
  5. Reddit PSA recommending Atlantisreddit.com
    review
  6. Reddit: HA for Atlantis Open Source?reddit.com
    review
  7. Atlantis Review 2026devopsboys.com
    review
  8. CVE-2026-82282 (Rapid7)rapid7.com
    security
  9. CVE-2026-64679 (SentinelOne)sentinelone.com
    security
  10. CVE-2025-58445 (NVD)nvd.nist.gov
    security
  11. Gruntwork: Atlantis or Terragrunt Scalegruntwork.io
    news
  12. Gruntwork homepagegruntwork.io
    official
  13. Gruntwork Pricinggruntwork.io
    official
  14. Announcing the Terragrunt Scale Free Tiergruntwork.io
    official
  15. How We Reached $1M ARR With $0 in Fundraisinggruntwork.io
    official
  16. Caddi chooses Gruntwork Pipelines over Atlantisgruntwork.io
    official