Access Undenied on AWS vs AWS IAM Access Analyzer: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Access Undenied on AWS is a free ciem tool. AWS IAM Access Analyzer is a commercial ciem tool by Amazon Web Services, Inc.. Compare features, ratings, integrations, and community reviews side by side to find the best ciem fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, company size fit, deployment model, here is our conclusion:
AWS security teams drowning in AccessDenied noise will find real value in Access Undenied on AWS because it converts CloudTrail denial events into actionable least-privilege fixes instead of leaving you to guess why a request failed. The tool is free and lives on GitHub with 264 stars, so adoption friction is near zero and you can audit the code yourself. Skip this if your organization needs a full CSPM platform; Access Undenied solves one problem exceptionally well and doesn't pretend to be a posture scanner.
Teams managing large AWS environments who need to eliminate excess IAM permissions without manual policy review will find AWS IAM Access Analyzer indispensable; it surfaces unused access across your account ecosystem and validates least privilege automatically. The tool covers NIST PR.AA and ID.AM functions directly, catching the permission creep that auditors flag every time. Skip this if your organization runs mostly outside AWS or treats IAM governance as a once-yearly compliance checkbox rather than ongoing hygiene.
