Life & fun · September 4, 2026
DocHero
Learn concepts one lesson at a time
What it does
DocHero turns reading programming documentation into a fun, game-like experience. Learn languages one lesson at a time.
DocHero turns boring documentation into bite-sized, game-like lessons. Read smart, play to learn, and level up your skills one language at a time. DocHero is built so that reading docs never feels like a chore. Short, focused lessons from official documentation, easy to digest and remember. Multiple choice, fill-in-the-blank, and code challenges to test what you learned. Earn XP, keep your streak alive, and unlock achievements as you level up. Plain language and clean design, so anyone can start learning today. Documentation is powerful but intimidating. DocHero breaks it down into small, interactive pieces so developers and beginners alike can learn by doing, one exercise, one level, one…from documentationhero.vercel.app
Does the same job
all alternatives →- RLReadlang – Learn a language while you surf the web2015 · readlang.com · ▲178





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Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is


Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io
Launched alongside, September 2026
the whole month →
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

Run Qwen3.8-Flash-Next (125B MoE, 104 GB at 4-bit) on Macs with a fraction of that RAM by streaming experts from SSD. MLX + Swift, Ollama-compatible API. - carloslfu/slotstream
Dev tools · 4d ago · github.com

NPC-Forge is a framework for building conversational agents that run on the CPU without relying on machine learning or LLMs. - NPC-Forge/docs/development.md at main · gioblu/NPC-Forge
AI · 2d ago · github.com

Weedout is a Safari extension that filters out videos YouTube labels as “Made with AI”.
AI · 4d ago · masteranza.github.io

Find your next hire or your next role from Hacker News monthly threads. AI-powered matching between candidates and job postings.
AI · 4d ago · hnmatchmaker.com

I made OwnTime to balance between competing priorities in my life. The idea is based on two main influences: the concept of "roles" from "The 5 Choices" (2015), and my repeated failure to effectively implement time blocking due to the necessary flexibility in my role. The app allows you to define time budgets, which are not much more than a few mutually exclusive countdown timers. The UX is essentially that of a chess clock for an arbitrary number of players with configurable time. The whole point of the app is to kick you out of the running role/priority when its time is up. One…
Life & fun · 4d ago · owntime.app