RepoFlow Team · June 15, 2025

Vulnerability Scanner Comparison for Docker and More

A practical comparison of free and paid tools like Grype Trivy Snyk and more

Why Scanning is Needed

Modern applications rely heavily on Docker images and open source packages. That also means inheriting their vulnerabilities.

A single outdated package or insecure base image can expose your systems. Scanning your containers and dependencies for known vulnerabilities helps catch these issues early, before they reach production.

Whether you are running internal services or deploying cloud workloads, scanning should be a default part of your workflow.

There are many tools available today. Some are fully open source. Others are commercial platforms with dashboards, policies, and automation.

Below is a clear, practical comparison of the most popular scanners for Docker images and package repositories.

RepoFlow currently supports Grype for scanning. If there is another tool you would like to see supported, let us know at hello@repoflow.io.

ToolPackage Type SupportedUI and CLIOpen SourceFree or Paid
GrypeDocker + 10 more typesOnly CLIFree
TrivyDocker + 8 more typesOnly CLIFree
SnykDocker + 5 more types💰
JFrog XrayDocker + 19 more types💰
Docker ScoutDocker onlyFree
ClairDocker onlyOnly CLIFree
Anchore EnterpriseDocker + 10 more types💰
Aqua SecurityDocker + 10 more types💰 Freemium*

Note: Aqua Security uses the open source Trivy scanner as part of its platform. While the full Aqua Platform is commercial, it offers a limited free tier for individual use.

Scanning in RepoFlow

RepoFlow includes built-in vulnerability scanning for Docker images and packages. When viewing a package in the UI, you can trigger a manual scan directly from the package page.

Here is how it works behind the scenes:

  1. RepoFlow uses Syft to generate an SBOM
  2. It runs a vulnerability scan using Grype

Scan results show up in the UI with clear severity levels and CVE details. You do not need to configure anything to run a scan. Support for additional scanners is planned. If there is one you would like us to add, let us know at hello@repoflow.io.

RepoFlow scan results using Grype

RepoFlow scan results

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