I built 119+ free browser-based developer tools — no signup, no data collection
hey everyone 👋
been working on this for a while and finally sharing it — SWE Helper (https://swehelper.com)
basically a collection of 119+ dev tools that all run in your browser. nothing gets sent to any server.
some of the tools:
🔧 JSON formatter, validator, tree viewer, diff
🔍 Regex tester, cURL→Fetch converter, JWT decoder
🐳 Docker command generator, K8s YAML generator, Nginx config builder
🔐 Base64/URL/Hex encoders, hash generators, password tools
📊 Sorting algorithm visualizer, Big-O cheatsheet
🎨 Flexbox playground, CSS Grid generator, Tailwind lookup
📸 Code screenshot generator, color pickers, and 80+ more
also threw in:
📚 145+ system design articles — caching, databases, case studies (Netflix, Uber, WhatsApp, etc.)
💻 480+ DSA problems organized by topic with progress tracking, HLD, LLD, behavioral prep
everything is free, no signup needed, runs client-side.
built with Next.js, React 19, TypeScript.
would love feedback or tool suggestions 🙏