A free floating widget with code symbols, a quick editor, and 17 dev/security utilities (Base64, JWT, CIDR, regex, cron...) always one click away. Unlike single-purpose tools, everything lives in one installable PWA. Mentor Mode adds a plain-language explanation under each tool. No account, no ads, no paywall. Available in French and English. Built solo, from Abidjan.

Hey Product Hunt! 👋 I'm Axel, a solo developer based in Abidjan, Côte d'Ivoire. I built Dev // Cyber Toolkit because I was tired of re-googling the same regex symbols and re-opening the same five sites just to hash a string or decode a JWT. It's a small floating widget you install once and keep on screen: symbol palettes, a quick code scratchpad, and 17 utilities (Base64, hashing, password strength, JWT decoder, CIDR calculator, cron translator, and more). There's also an optional "Mentor Mode" that adds a short plain-language explanation under each tool — useful if you're still learning what a JWT actually is. 100% free, no account, no ads, nothing locked behind a paywall. Available in French and English. I posted it on Show HN last week and it brought in 135+ visitors from that single post — which told me the core idea (one lightweight place for the small stuff) actually resonates beyond just me. That's what pushed me to bring it here too. Would love your feedback, especially on what's missing or confusing. Thanks for checking it out 🙏

Small update for anyone following: I just published a companion CLI for terminal lovers 👋

npm install -g dev-cyber-toolkit-cli

Same tools as the widget (Base64, hashing, JWT decoder, CIDR calculator, cron translator, password strength, and more), zero dependencies, and it plays nicely with pipes (echo "text" | dct base64 encode).

Still free, still no account needed. Thanks for all the support here 🙏

Small update for anyone following: I just published a companion CLI for terminal lovers 👋

npm install -g dev-cyber-toolkit-cli

Still free, still no account needed. Thanks for all the support here 🙏

Dev // Cyber Toolkit

Your floating dev + cybersecurity toolkit

Your floating dev + cybersecurity toolkit