My Cat Is Fat

Tools, Methods & Processes

12 curated tools for developers, designers & indie hackers

Filtered by tag: testing

Websitecarbon

Measure the CO2 footprint of websites and improve sustainability

All-in-one OSINT tool for comprehensive website analysis and security auditing

Open Source

SMTP testing tool for developers with modern web UI and API

Automatic CSS error checking and code quality analysis for web developers

Official W3C HTML validator for checking markup errors

Collect and inspect HTTP requests for webhook testing

Free website tests for performance, DNS, security and SEO

Test web accessibility and verify WCAG compliance

Open Source

Professional password cracking tool for security testing and audits

Open Source

Test responsive design on all devices simultaneously

Paid

Browser for web designers: Test multiple viewports simultaneously

Open Source

Automated visual regression testing for perfect UI quality

Missing your favorite tool? Let us know — we're happy to add fitting tools to the collection!