Regex101.com is an interactive regular expression console that lets you debug your expressions in real-time.
Software Testing Tools & Resources
Largest collection of Resources and Tools for Software Testing Community
regular expressions 101
Axe Html Reporter
Creates easy to read HTML file from axe-core accessibility results object
Color Contrast Analyzer
Great tool for checking color contrast for both text and images of text.
Accessibility Insights for Web
Accessibility Insights for Web helps developers quickly find and fix accessibility issues.