I built 140+ free dev tools that never touch a server (solo project)
Hey IH 👋
Wanted to share something I've been building solo: Rocket Dev Tools — a growing collection of client-side developer utilities, currently at 140+ tools across four areas (cloud architecture sizing, everyday dev utilities, AI/LLM engineering tools, and image tools).
The idea started from a personal annoyance: every time I needed a JWT decoder, a regex tester, or a Kafka partition sizer, I'd end up on a different random site, half of which felt sketchy about what happened to the data I pasted in. So the rule for this project became: everything runs 100% client-side. No backend, no signup, no file uploads, zero telemetry. What you paste never leaves your browser.
Some stats:
- 140+ tools, 4 suites (Architecture, Developer Utilities, AI/LLM, Images)
- Built with Astro + React + TypeScript, deployed on Cloudflare Pages
- Just shipped offline/PWA support so it works without a connection
- Zero revenue model right now — it's free, I might go for affliate based monetisation soon or run non-intrusive ads.
Currently focused on getting it in front of people who'd actually find it useful, and iterating on which tools to add next based on real usage rather than guessing. If you've got an "I always have to Google this" dev task, I'd love to hear it — might already have a tool for it, or might build one.
The client-side constraint is the strongest part here. A large toolkit is useful, but knowing that sensitive code, tokens, or files never leave the browser makes these utilities much easier to trust.
Yes, exactly! Its a problem I myself as a developer had to go through every day, hence decided to build something to fix that problem.
That makes sense. It’s always interesting when a product comes directly from a workflow the builder was dealing with themselves.