An open-source collection of developer tools built with Astro and React. Build useful tools, improve existing ones, and contribute as a beginner-friendly project.
An developer utilities all in one desktop app — JSON, JWT, Base64, regex, QR codes, hashing, color picker, and more. Built with Tauri 2 + React.
Free online developer tools — 100% client-side, privacy-first, zero uploads
🧰 Dev Vault：558 browser-based developer tools · All offline · Zero dependencies · One HTML file each | 558 个浏览器端开发工具 · 全离线 · 零依赖 · 每个工具一个 HTML 文件
124 free developer tools + website grader. No signup, no tracking. JSON formatter, regex tester, DNS lookup, CSS generators, finance calculators, and more.
A privacy-first browser-based platform offering essential developer utilities like JSON formatting, JWT decoding, Base64 encoding, regex testing, and more — all running locally without server processing.
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