A comprehensive guide to debugging tools for modern, complex front-end applications. This handbook provides practical, real-world guidance on a complete suite of tools, from Chrome DevTools and framework extensions to integrated IDE debuggers.
Fix your tools
Last week I had to diagnose a bug in an open source library I maintain. The issue was gnarly enough that I couldn’t find it right away, but then I thought: if I set a breakpoint here and fire up the debugger, I will likely find the root cause very soon… and then proceed to mercilessly destroy it! So I rolled up my sleeves, set the breakpoint, fired up the debugger, and… saw the program run to completion without interruptions whatsoever.
REA — Reverse Engineer Anything
Inspect apps, binaries and runtime behavior with your coding agent or terminal. REA connects local analysis tools through CLI and MCP.
Frontend System Design: The Complete Guide 2026
Learn how to approach frontend System Design interviews with real-world architecture patterns, scalability strategies, and practical examples used by top tech companies.
delphitools — privacy-first browser tools
A collection of small, low stakes and low effort tools. No logins, no registration, no data collection. Everything runs locally in your browser.
Ratatui
Ratatui: Cook up delicious terminal user interfaces in Rust - the fast and lightweight TUI library trusted by developers
atproto PDS & account debugger
Quick diagnostics for PDS hosts, handles, relay connections, handles, DIDs, ...
How Baseline Can Help You Ship Less JavaScript — Smashing Magazine
The gap between “you need a library for this” and “the browser does this” keeps closing. A practical guide to auditing your dependencies and finding what the web platform can now handle for you.
A practical guide to frontend System Design
Sam, a passionate frontend developer, had been in the job market for what felt like...
IT Tools - Handy online tools for developers
Collection of handy online tools for developers, with great UX. IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.
A new era for software testing - <antirez>
Script Wizards
A TTRPG and software studio. Small tools for running games, and a zine for hackers who play them.
davatron5000/awesome-standalones
A curated list of awesome framework-agnostic standalone web components
Introduction to Google Chrome Extensions
Impeccable: Design skills for AI harnesses
1 skill, 23 commands, and curated anti-patterns for impeccable frontend design. Works with Cursor, Claude Code, GitHub Copilot, Gemini CLI, and Codex CLI.
Impeccable: Design skills for AI harnesses
1 skill, 23 commands, and curated anti-patterns for impeccable frontend design. Works with Cursor, Claude Code, GitHub Copilot, Gemini CLI, and Codex CLI.