Awesome Dev Utilities is a curated collection of free, fast, and no-login online developer tools from LoopPlunk. It includes everyday utilities like SQL formatters, cron expression helpers, UUID and QR code generators, unit converters, text tools, and developer cheat sheets — all designed to save time and simplify common development tasks.

A curated collection of free online tools to boost productivity, optimize websites, and enhance SEO.

Russian Business Data Generator

实战型开发教程与可运行代码示例库：Backend/Frontend/DB/AI/LLM/Cloud，一知识点一示例，能跑能学能用。

QAstro.js is a modular library for automatic accessibility and security linting of web pages. Easily extensible with new rules

MCP server for AI-powered code analysis — test generation, security audits, refactoring suggestions

Chrome extension for clearing cookies, storage, and permissions with one click.

A high-performance tool to bundle your entire project into a single Markdown file for LLM context, featuring .gitignore support and client-side ZIP processing.