ToolCrux is a collection of 42 developer and utility tools that run entirely client-side. No accounts, no data sent to servers. What makes it different: • Tool chaining — output from one tool flows into the next • Shareable state — share any tool's state via a short link • Embeddable — embed any tool on your site with one iframe tag • 1,400+ SEO landing pages for quick answers (timestamps, hashes, conversions) Built with vanilla JS, Cloudflare Workers, and zero frameworks.

Humans in the Loop — A free community for people who love using AI to ship faster

A free community for people who love using AI to ship faster

Hey everyone! I built ToolCrux because I got tired of opening 10 different websites for simple dev tasks — formatting JSON, testing regex, generating passwords, converting timestamps. So I built one place with 42 tools that all run in the browser. No accounts, no data leaves your machine. A few things that make it different: - Tool chaining: output from one tool flows directly into another (e.g. JSON Formatter → JWT Decoder) - Shareable state: share any tool's exact state via a short link — like regex101 but for every tool - Embeddable: any tool can be embedded on your blog or docs with a single iframe - 1,400+ long-tail pages for quick answers (e.g. toolcrux.com/unix-timestamp-1708000000) The whole thing is vanilla JS + Cloudflare Workers. No React, no backend servers. I'd love to hear which tools you use most and what's missing. Happy to answer any questions about the architecture too.

Humans in the Loop — A free community for people who love using AI to ship faster

A free community for people who love using AI to ship faster

ToolCrux

42 free dev tools that run in your browser, no signup

42 free dev tools that run in your browser, no signup