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Regex101
Developer ResourcesAn interactive regex tester with real-time highlighting, explanation, and a library of community patterns.
freeweb
BackendCheatsheetFree
An enormous index of programming cheatsheets gathered from across the web into one searchable page.
OverAPI is the collector of cheatsheets. It aggregates references from around the internet — JavaScript, Python, Linux commands, regular expressions, design patterns, and dozens more — into a single scrolling page you can search with your browser. The sheets are organized by technology with quick-jump navigation, and everything is one keypress away. It's a bit like having a library of quick references you never have to curate yourself. When you need to look something up fast and don't want to open a full manual, OverAPI is a solid second brain.
An interactive regex tester with real-time highlighting, explanation, and a library of community patterns.
Up-to-date browser support tables for HTML, CSS, and JavaScript features, essential for cross-browser work.
A browser extension that formats, validates, and syntax-highlights JSON in the browser with collapsible trees.
An API development tool that makes it easy to send requests, inspect responses, and organize the endpoints you work with…
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