Yurlie
Little tools. Big help.
What it does
Fast, privacy-first developer and network tools. CIDR calculator, JSON formatter, Base64 encoder, UUID generator — all running in your browser.
Does the same job
all alternatives →- YAYurl.ai – a tiny F# URL shortener that invents its own slugs2025 · yurl.ai · ▲5
Hi HN, I hacked together Yurl.ai last week—a bare-bones URL shortener in F# / .NET 9 using a simple CQRS + event-sourcing setup. The gimmick: for each new link, it grabs the page text and asks a small language model to suggest a short, readable slug (4–8 chars). I’m curious whether these model-made names beat the usual random hashes. Tech bits: Actors as aggregates SQLite for both event store and read model Source (MIT): https://github.com/OnurGumus/YURL Live demo: https://yurl.ai (free tier—please be gentle) Happy to hear what you think.
Everyday Dev Tools12d ago · toolsfordev.tools · ▲1free developer tools that work offline, in your browser
- YAYubiClicker, a clicker game that requires a physical security keyApr 2026 · yubiclicker.com · ▲5
I thought cookie clicker but with yubikey taps might be funny, and this is a proof of concept. Cloudflare did something similar in 2021, pitching yubikey-proven taps as a captcha replacement: https://news.ycombinator.com/item?id=27141593 Cloudflare's idea of proving personhood with yubikey taps wasn't well received at the time. But here for a silly game, I think the idea holds up better. We can prove that you have a key, and serially tapped it a lot. If you automate activating the touch sensor on a physical key, you might be able to do a bit better. That's cool and you deserve…
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com