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Regex101
Developer ResourcesAn interactive regex tester with real-time highlighting, explanation, and a library of community patterns.
freeweb
BackendCheatsheetFree
Up-to-date browser support tables for HTML, CSS, and JavaScript features, essential for cross-browser work.
Can I Use answers the question that decides a lot of web development: which browsers support this feature? Its tables show support for HTML, CSS, and JavaScript features across every major browser and version, with clear green, yellow, and red indicators. It includes usage statistics so you know how much of your audience actually has the browser that supports something. For everything from flexbox to new CSS color functions, it's the authoritative compatibility reference. One tab that settles arguments and prevents shipping broken layouts.
An interactive regex tester with real-time highlighting, explanation, and a library of community patterns.
The official browser extension for inspecting React component trees, props, state, and performance.
An efficient, open-source ad blocker that removes ads and trackers with minimal impact on page load speed.
A browser extension that formats, validates, and syntax-highlights JSON in the browser with collapsible trees.
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