Tools & Resources

The right tools turn quality engineering principles into measurable results. This topic provides a curated, opinionated guide to the best tools available for every area of quality — from accessibility and security to performance, SEO, code quality, and CI/CD. Each lesson covers free and paid options, explains when to use each tool, and helps you build a toolchain that fits your team and budget.

1. 1
   Accessibility Tools

   axe-core, Pa11y, WAVE, screen readers, color contrast checkers, and CodeFrog — everything you need to test WCAG compliance.
2. 2
   Security Tools

   OWASP ZAP, Burp Suite, Gitleaks, Snyk, Dependabot, Mozilla Observatory, and more for application security testing.
3. 3
   Performance Tools

   Lighthouse, WebPageTest, Chrome DevTools, web-vitals, Bundlephobia, and image optimization tools for faster sites.
4. 4
   SEO Tools

   Google Search Console, Screaming Frog, Ahrefs, structured data validators, and social preview debuggers.
5. 5
   Code Quality Tools

   ESLint, Prettier, Semgrep, SonarQube, HTMLHint, W3C Validator, and other linters and static analysis tools.
6. 6
   CI/CD Tools

   GitHub Actions, Jenkins, CircleCI, CodeRabbit, Codecov, Husky, and tools for automating your quality pipeline.