Zlvox – A no-signup suite of developer tools (JSON, Temp Mail, PDF)
Yet another free tool suite, but the privacy-first angle is the only real differentiator.

Yet another dev tools collection, but the steganography tool actually runs client-side.
Developers needing quick, privacy-focused utilities
CyberChef · Browser DevTools · SmallSEOTools
Yet another free tool suite, but the privacy-first angle is the only real differentiator.
Yet another dev tools collection when CyberChef and browser DevTools already exist.
Site returns 502 error on launch day, and the tools are already in browser DevTools.
700 tools in a static site, but CyberChef and browser DevTools already do this.
Another static collection of dev utilities when CyberChef and browser DevTools already exist.
Everything important runs in the browser: JSON formatters, a JWT debugger explicitly marked 100% client-side, and a new Database Design Studio that turns SQL/Prisma schemas into draggable ER diagrams you can export as PNG. The product’s hook is convenience plus privacy — a single place to grab many small tools without sending snippets to a server. It’s useful and nicely designed, but the core idea is a well-curated bundle rather than a novel technical breakthrough.