LegacyFixer vs qsa.sh
Side-by-side comparison of features, pros & cons, pricing, and community votes (2026).
🏆 qsa.sh leads with 111 upvotes

Python dependency security scans with optional fix PRs
LegacyFixer is a security-focused Python dependency scanning tool designed for developers and DevOps teams prioritizing application security. Operating seamlessly as a GitHub App on Google Cloud Run, it offers vulnerability detection with an emphasis on safety—reporting issues even when automated fixes are not suitable. Unlike traditional dependency managers, LegacyFixer intelligently determines when to create fix pull requests based on policy and validation checks, ensuring that changes are both secure and appropriate. Its clear, outcome-driven reports include explicit 'detect-only' results when no action is necessary, helping teams understand their security posture without unnecessary noise. This tool is ideal for organizations that need precise security insights for Python dependencies while maintaining control over automated updates, making it a valuable addition to secure CI/CD workflows.
Pros
- Security-first approach with detailed vulnerability reporting
- Creates fix PRs only when policies and validations permit, reducing false positives
- Runs as a GitHub App on Google Cloud Run, ensuring easy integration
- Explicit outcome reporting including detect-only results
- Focuses specifically on Python dependencies for targeted security
Cons
- Limited to Python dependency security, not suitable for other languages
- No information on pricing or free tier options
- Potentially less automated than broader dependency managers like Dependabot or Renovate
Best for
- • Regular security scans for Python projects to identify vulnerabilities
- • Automated creation of fix PRs when safe and policy-compliant
- • Organizations needing detailed, security-first dependency management
- • Teams seeking to integrate dependency security scans into CI/CD pipelines
Pricing: Pricing not verified

External security scan of your own IP, in your terminal
qsa.sh is a powerful command-line tool designed for developers and security professionals to perform quick, comprehensive external security scans of their own servers. With a single curl command, users can instantly see what the internet perceives about their server—covering open ports, service versions, and known vulnerabilities—delivered directly to their terminal within approximately 30 seconds. Its integration of tools like naabu, nmap, vulners, and nuclei ensures a detailed mapping of potential security gaps without requiring any accounts or data storage. The platform caters to both free, live scans and premium options like the Pro plan, which scans all 65,535 ports asynchronously, and a one-time Deep scan that digs deeper into hidden vulnerabilities via email. Its straightforward approach makes it ideal for sysadmins, security teams, and developers seeking a quick, transparent security overview of their infrastructure.
Pros
- Instant, real-time security insights delivered directly in the terminal
- No account required and no data storage, ensuring privacy
- Combines multiple scanning tools for comprehensive vulnerability detection
- Flexible plans including free, Pro, and deep scans for different needs
- Fast scan times (~30 seconds) suitable for routine checks
Cons
- Limited depth in the free scan compared to paid options
- Requires command-line familiarity, which may be intimidating for non-technical users
- Potential false positives or overlooked vulnerabilities in quick scans
Best for
- • Quickly auditing server security before deployment
- • Regular external vulnerability checks for ongoing security posture
- • Preliminary scans prior to detailed penetration testing
- • Monitoring open ports and services on cloud or on-premise servers
Pricing: Likely operates on a freemium model with free live scans and paid plans offering more comprehensive, asynchronous, or one-time deep scans. Exact pricing details are not specified, but premium features probably start around a monthly fee.