Sumi.css – CSS Framework

A minimalist, classless-first CSS framework.

Computer use on the phone itself: a 2B model that operates Android apps

Jev Cards, Can you beat a vision model at a picture quiz?

I built a quiz game around TypeSafe's new Jev model, which has vision capabilities. Jev looks at a picture and a question and picks an answer (or taps a place) in about a quarter of a second. I've always loved quiz games and thought this would be a fun way to see what it can do…

Death Plan Switch, a self-hosted dead man's switch for solo devs

Hi HN, I'm Peter Bishop and I've been working in graphics and web tech for over 25yrs. I've recently launched Death Plan Switch to solve a major problem in my succession plan. What if I go missing or die? The right people are told and my business can continue to operate for my…

Qwen3-4B with the AI writing tics trained out

Sphinx – A hook that quizzes you on your AI's code before shipping

FOSS, Basically it plugs into your existing coding agent workflow and every time you push to prod it'll throw up a questionnaire that checks if you understand how the code you're pushing works.

Llmspeed – feel how fast a local LLM runs before you buy the hardware

High-quality duck audio synthesizer

Unfenced – Land for sale that borders public land

Clerkenwell – A Handwritten Clojure Notebook

I built a task system to handle the drudgery so I could focus on tasks

I'm a software engineer from the east coast (who has lived in Boston, NY, the bay area, UK, France), and I built a task system called 3 & Done. It's the place you trust to store everything you need to do. It accepts voice input for rapid entry, as well as text (it stores the…

RoadRash ported to Three.js to run in the browser

Road Rash was one of my favourite PC games growing up. I wanted to play it again, but the browser emulators I tried felt sluggish, so I decided to build a browser version using Three.js. This started mostly out of nostalgia. I wanted to be able to open a link and get back to…

Petal, open-source CoScreen/ScreenHero finally free

Hi HN! I’m Jason Thomas, one of the founders of CoScreen. As some of you may know, Datadog sunset the CoScreen service on July 31st. Four of us from the original CoScreen team have spent the last couple months building a free and open source pair programming tool inspired by…

Snitch – my Mac talked to 347 servers in one idle hour, so I built this

Real-time network traffic visualizer — see every connection your computer makes. Privacy-first, 100% local. / Visualiseur de trafic réseau en temps réel, 100% local.

Open-source early-reading reader with phonics help

My kid is 6 y/o and she is learning to read. She's moved through the basic phonics with Teach Your Monster to Read but was struggling with how repetitive it was. I wanted to give her some stories to read, but she still needed help sounding words out - and I wanted her to have…

500 clocks in one 6.3 MB HTML file by Opus 5.5

Lately I've been testing frontier models by having them create self-contained web pages that display clocks--sort of my personal version of Simon Willison’s pelican-on-a-bicycle metric. I have been particularly impressed by the variety, interest, and quality of the clocks…

Carrier-Explode: iPhone, Pixel and Galaxy carrier settings decoded

Showing off carrier-explode, one of my side projects that continuously archives carrier settings for all major phone brands. carrier-explode also contains decoders and explanations for all the common baseband configurations, etc. There’s still quite a bit of work to be done in…

How random are you?

Another Blog Search Engine

Traditional search was not on the original roadmap for our blogosphere/indieweb discovery project. But with the framework and data in place, it was easy enough to add a no-frills search function. In addition to the normal search result info, each post has a link to the Outer Web…

Use your OpenAI subscription to create audiobooks

Proa – A Rust web framework with fast SSR and multi-target rendering

Video: https://youtu.be/-CfCyvIKYyo?si=hCLuStkXxanCUJD1 Video on multi-target rendering: https://youtu.be/pJx84jdBDKU?si=HRRd6dgUWXiqeWhq Benchmarks: https://github.com/Proa-Labs/proa-benchmarks

PatchWave - Add static analysis and automerge to Dependabot

Hey Hacker News, we're Ben, Josh, and Donnie, co-founders of PatchWave. PatchWave is a GitHub App that combines static analysis and eval'ed agents to analyze and (optionally) auto-merge PRs it deems as safe. If a Dependabot PR breaks your CI build, a fix agent works to get CI…

Ranet3 – High performance policy routed IPsec mesh SD-WAN

btw this is already running on all my machines (including a macbook), and i've configured all of them to have routable public ip addresses ;) especially for the mac, my ISP is SFR (over coaxial connection) with only dynamic ipv4, i can use this to get stable v4/v6 addresses very…

Dovepass – can I legally fly a drone along this exact path in SF?

Dovepass answers one question for drone operators: given two points, can a drone legally fly between the two points? I build route planning for delivery drivers and wanted to check what it would look like if the vehicle flies. Drone navigation is different from land-based…

BetterWispr – Free, open-source dictation for Mac

FlexChords – chords for any YouTube song, from a model I trained

I play guitar, and chord charts online were often wrong or oversimplified for the songs I wanted to learn, so I built FlexChords. You can edit the detected chords, transpose, and export to MIDI. 1-minute demo: https://youtu.be/-cbL3L3UnGs It's still a work in progress. I'd love…

I wrote an email app that accepts only one sender per inbox

Infinite inboxes, including prefixes where you don't have to create inboxes before you use them -- they self create when you add a suffix. Three types of inboxes: - One sender. Locks to the first domain to send email (except gmail, outlook, etc where it locks to an email account…

Atticus – Hold-to-talk voice assistant for macOS that runs on Claude -p

Hi HN! I'm Saarth. I'm in 9th grade, and I built Atticus. Atticus is a fast and cheap Mac assistant that can do tasks for you. You hold down Control-Option-Space, speak or type your task, be it complex or a simple browser search, and Atticus will get on it. The interesting part…

Wonderhop – A daily game: guess what most people say, or what none do

Hello HN! Wonderhop is a small browser game with no account needed to play, everyday there are 4 rounds of 7 quesitons like "Name a food that a lot of people hate" The goal depends on the mode: Either gives the answer most people would give, the one no one would give, the oldest…

I built a tool to track what AI leaders say and how their views change

Quake ported to safe Rust, playable in browser

Things to Do API

I built an api/mcp for local events: pop-ups, one-off events, concerts, etc. currently covering the SF bay area. I've been building a bunch of consumer apps lately around personalization and recommendation and have had a hard time finding this data in one spot. agents can find…

OmniPTY – Opinionated terminal emulator for macOS and Linux

Opinionated terminal emulator for macOS and Linux: splits, workspaces, file tree and prompt built in. GPU-rendered, written in Rust

The rarest tech books and docs you've probably never read

Indigene – Native plants for where you stand

Back when I lived in Central Florida, it took me years to learn what native plants could benefit wildlife and the local ecosystem as I slowly replaced parts of my yard to make it more resilient to drought. After moving to Seattle a few years ago, I had to start all of that from…

Fakeipedia – Wikipedia for worlds that don't exist

Hi HN! Fakeipedia is an automatic world-building platform which takes an imagined world and makes a whole wiki that you can endlessly explore by clicking red links. I came up with this idea a few months ago after playing around with worldbuilding in Gemini, but I didn't want to…

XY Music Notation

I've been playing around with a new kind of isomorphic music keyboard that uses a base-12 notation, and wanted some sheet music to learn some new music for it. The idea is to represent each note in 12-TET as a number, so N ∈ (0,1,2,3,4,5,6,7,8,9,X,Y). I used codex to build a…

Apogee: Rebuilding Mozilla's Orbit, fully local and private

Hey everyone! Last year, Mozilla released Orbit, an AI-powered browser summarizer hosted on a GCP server. After people started digging into the extension, they discovered things like backend endpoints such as store_result. Eventually, Mozilla discontinued the project. For the…

Proton Drive for Linux

Hello everyone, I wanted to share this small project that I have. It's born out of a necessity that I had, because Proton doesn't ship a Linux version of the drive yet (it's apparently coming out later this year but who knows?) and all the current solutions are hacky and wonky…

OneDeploy – Managed open-source apps with nightly backups and TLS

Happy Hangul Day! An RNN for Generating Korean Handwriting Strokes

Vibe coded a city builder set in ancient Rome

BraiNOTES, handwritten notes on your lecture PDFs in a browser tab

In August, I posted here about TeXbrain, a LaTeX editor that runs completely in the browser, with no need for an account or server. (I didn't excpect it to get that much feedback, bug reports and help from here!) This is the same idea for the other half of my studies, the…

Opensidian

Edi Life OS – self-hosted life dashboard with an MCP server for AI

Self-hosted life OS: habits, goals, Kanban, finance and focus, with an MCP server for AI.

Building an LLM from Scratch in TypeScript

I wanted to understand transformers at a level where nothing is magic, so I'm building a ChatGPT-style model from first principles in TypeScript. Why not Python? I've found that reimplementing concepts in a different language forces me to grasp the nuance of the implementation.…

Online Piano – Play a Free Virtual Piano Keyboard

T0: We trained a 256M SOTA open-weights time-series forecasting model

Hi everyone, we are excited to share t0-gamma, the latest model in our t0 family. It is a 256M parameter open-weights foundation model for time series (TSFM). It runs on CPU, GPU or Apple chips. https://huggingface.co/theforecastingcompany/t0-gamma t0 leverages historical data…

Plimsoll, a self-hosted sandbox for code your AI agent writes

A sandbox service for running untrusted, agent-authored code that reports the isolation boundary each run executed behind. Lessons, no clone needed: https://plimsollmark.github.io/plimsoll/trainers/

SVG Spark – 10 client-side SVG design and dev tools

Ask a technical question, get an animated explainer you can interrupt

MemorySync – Memory for AI Agents

I created MemorySync because I kept running into the problem of AI agents not being able to remember useful things about users between conversations. I wanted an easy way to give the agents memory in my application without having to build the whole thing myself. MemorySync is an…

Grimoire for Biology

AxiomCode Graph, Reducing coding agent rework with formal methods

Turn any codebase into a knowledge graph grounded in formal methods. Your AI agents get exact answers for any code-related task, ensure correctness, and optimize time and token usage.

gtlds.fyi – All the proposed new gTLDs

Just gave Claude Code the website and ad budget to see what it would do

I build websites for a living. Lately, it's more about prompting than actually writing the code (the art part is still there). So I decided to leave that part to Claude too and see what it would come up with. So far, I have given it - A baseline website - Full access to Google,…

The first short movie built using code and AI

Timur's Chess – A 14th century chess variant with giraffes

My weekend vibecoding project was to attempt to resurrect a 14th century chess variant favored by the Central Asian warlord Timur (Tamerlane). There are giraffes, elephants, citadels, and you can promote up to 2 additional kings! theres a working AI chess engine and relatively…

Built a Rome City Builder

Agor, multiplayer AI – stop running agents alone

Multiplayer AI: Bring your team and agents together

LLMxRay an open-source observability tool for LLMs

LLMxRay — Local LLM Observatory. Full observability interface for Ollama: chat, streaming, reasoning, RAG, introspection, metrics.

Stream live open data in two commands

A service and open source tool to get open data streams in two commands. No sign up needed for subscribing. Streams to try: - https://hypermass.io/stream/_J0fm450s - extreme UV images of the sun from SOHO - visual data - https://hypermass.io/stream/_ATtCoEK - GDACS live disaster…

I rewrote my website in Swift

Skills Hub, a desktop app for managing AI agent skills

A cross-platform desktop app to manage Agent Skills in one place and sync them to multiple AI coding tools’ global skills directories — “Install once, sync everywhere”.

Knitting – A shared-memory concurrency runtime for Node.js,Bun,and Deno

Mira, AI Walking Tours

Wordminos – Crosswords Meet Dominos

I built a daily word game in 12 days. The base mechanic only took an hour. Getting it to the finish line took the rest. The work was in iteration: design, polish, juice, character. Taste, for now, is still relevant. Enjoy!

Littleguys – Claude Code, Codex and OpenClaw agents in your menu bar

A simple to-do app for iPhone, Mac, and your agent

OldRoll, a free vintage photo editor for the browser

OldRoll Web brings vintage camera effects and film-inspired filters to your browser. Give everyday photos a nostalgic look without installing an app, with all creative assets free to use.

GeoRadios – Spin a globe, hear what's on the radio there

Pivot – fast analytics on Iceberg, 2x+ faster than ClickHouse / DuckDB