This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
dev101.io
One box for every dev utility — runs in your browser
Privacy-first, keyboard-driven hub for 50+ dev tools: format, encode, hash, diff, convert, generate, inspect — all in one place, 100% client-side. Format JSON, decode JWTs, hash strings, convert timezones, build regex — 62 tools in one box. Transforms run in your browser, so your data never leaves the tab. No ads, no signup, no uploads. ⌘K to jump to any tool. Installable, works offline. Free.
Hey Product Hunt 👋
Every developer has the same ritual: google "json formatter", land on a site buried in ads, paste your payload into a box, and quietly hope it isn't being logged somewhere. Then repeat for base64, JWT, timezones, regex, hashes.
I got tired of it and built the box I wanted.
dev101.io is 62 tools across 13 categories — JSON, encoding, crypto, regex, time, network, AI, media — in one keyboard-driven place.
What makes it different:
• Your data stays put. Formatting, hashing, encoding, diffing — all of it runs client-side. Nothing is uploaded. (The network tools — DNS lookup, uptime check, my-IP — obviously make requests. That's their whole job.)
• No ads, no signup, no cookie wall. Analytics is cookieless page-counts only.
• ⌘K from anywhere jumps to any tool in two keystrokes.
• Installable PWA — works offline once loaded.
• Shareable state — inputs live in the URL hash, so you can send a colleague a link without the data hitting a server.
• Every transform is hand-written rather than pulled from a random package — 2,295 tests covering the lot.
It's free and there's no upsell. I'm not building a funnel; I built a utility box and I use it daily.
Would genuinely love to know: which tool is missing? That's how the last dozen got added.
Finally something that lives up to the offline-first pitch - the timezone converter actually works without internet. Love the cmd-K palette for jumping between tools, makes it feel almost like a launcher.
the keyboard shortcut to jump between tools is honestly the first thing i tested and it just feels right, super snappy. love that everything actually runs in the browser too
love how everything runs client-side and the cmd+k palette actually feels instant, you nailed the keyboard-first flow
About dev101.io on Product Hunt
“One box for every dev utility — runs in your browser”
dev101.io was submitted on Product Hunt and earned 4 upvotes and 4 comments, placing #95 on the daily leaderboard. Privacy-first, keyboard-driven hub for 50+ dev tools: format, encode, hash, diff, convert, generate, inspect — all in one place, 100% client-side. Format JSON, decode JWTs, hash strings, convert timezones, build regex — 62 tools in one box. Transforms run in your browser, so your data never leaves the tab. No ads, no signup, no uploads. ⌘K to jump to any tool. Installable, works offline. Free.
dev101.io was featured in Software Engineering (42.8k followers), Developer Tools (517.5k followers) and Artificial Intelligence (475.9k followers) on Product Hunt. Together, these topics include over 200k products, making this a competitive space to launch in.
Who hunted dev101.io?
dev101.io was hunted by Max Dutkin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how dev101.io stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Max Dutkin