A content aggregator where you bring the algorithm

Someone took vermiceli's annotated Contra disassembly and translated the 6502 assembly routine by routine into C, checking each step frame by frame against the original in the Mesen emulator. Then the C went to WebAssembly so it runs in a browser tab. The cherry on top: online co-op, two players over the internet. Frame-by-frame checking is the kind of stubbornness this deserves.

Made by tevlon on HN, not me.
HN: news.ycombinator.com/item?id=50319169

Contra — NES Native Port (WebAssembly)

Fraktur is a DJ mixing app that also runs in the browser, and its project page is a short introduction to the thing. It's a music doodad for mixing right in a tab, which feels like a lovely small web delight. Worth a peek if you like tools that turn the browser into a little studio.

Made by janesconference on HN, not me.
HN: news.ycombinator.com/item?id=50303832

Green Vitriol - Fraktur: A DJ mixing app in the browser

Every petal, leaf and stem is a parametric curve computed in Lua as the page is written, painted like watercolor and dropped straight into the PDF — no images, no imported paths. One document places its garden by hand; the other grows it, a greedy loop filling whatever space the text leaves free, down to the gap below a short last page. Worth a look for the mottled washes and white veins alone.

Made by kevinraymond on GitHub, not me.

GitHub - kevinraymond/florilegium: Procedurally generated Delft-blue floral page margins for LuaLaTeX, drawn in Lua

A set of agent skills for Claude Code and Codex, written in Python, that cover the life of a pull request. full-send carries a change to a merged PR with nobody watching; full-stop halts when it is ready for you, and council loops three models from different providers until they agree. Skills call one another, so the README says which to install together, and they are written to be edited.

Made by t3dotgg on GitHub, not me.

GitHub - t3dotgg/tstack: The agent skills I use every day. Works with Claude Code and Codex.

It audits a screen for the tells of machine-made UI — purple gradients, glows, emoji labels, shouty copy, uneven spacing — and names where each one lives. Before it edits, it proposes a direction drawn from the product: character, the one or two moments that carry colour, a signature detail. Then it fixes pass by pass, spacing first and motion last, in whatever stack the screen is built with.

Made by heydamir on GitHub, not me.

GitHub - heydamir/unslop: A Claude skill that turns vibecoded, AI-looking UI into a designed interface

Star the repo and a webhook sends your GitHub avatar to a PHP script on a Raspberry Pi, which frames the picture and prints it on an Epson thermal receipt printer. The printed pictures get stuck to a pinboard called the Hall of Frame, and a one-time sponsorship beforehand earns a special frame. It is a small, silly joy: your face as a receipt, pinned to a wall.

Made by aschmelyun on GitHub, not me.

GitHub - aschmelyun/print-my-profile-pic: Say cheese! Star this repo and your profile picture gets printed out on a receipt printer.

Written in Rust, Apache-2.0, and stateless by design: no database, no custom resources. It works with objects already in the cluster and never acts with more rights than you have. The installer sets up K3s or RKE2 on one Linux server, or a Helm chart goes into an existing cluster; zeaburctl ui runs it against your current kubeconfig context. Pre-alpha 0.1.1 — not for a cluster you can't afford to break.

Made by zeabur-oss on GitHub, not me.

GitHub - zeabur-oss/zeabur: Self-hosted PaaS on your own Kubernetes.

A Claude Code skill that turns SVG drawings into 60 fps animation in React Native and SwiftUI. What it really teaches is the tells of dead motion: faces teleporting between expressions, bodies stopping dead at each pose, flickering blinks, seams where shapes meet. The fixes are animator's grammar — one clock, real pivots, trailing parts, idle life, small amplitudes, strong curves.

Made by rossark0 on GitHub, not me.

GitHub - rossark0/rossark-motion-skill: Turn any SVG into a professional 60 fps animation. A Claude Code skill that brings anything drawn to life: live faces, full-body acting and whole scenes, in Rea

Soft plush characters for AI helpers and more, built in 3D with Three.js. You configure one and drop it into your page, which is a lovely thought: a squishy companion tucked into the corner of a screen. The sort of small, soft thing that makes a page feel friendlier.

Made by prathje on HN, not me.
HN: news.ycombinator.com/item?id=50271968

plushies

Hob is an MIT-licensed desktop app for Mac, Windows and Linux that runs open-weight models on your own machine, so chats and files never leave the system. It picks a model that fits your hardware on first launch, then reads and edits files in a folder, runs sandboxed Python for charts and conversions, and recognizes images. Web search and MCP connectors are the only parts that go online.

Made by pancomplex on HN, not me.
HN: news.ycombinator.com/item?id=50246238

GitHub - FrigadeHQ/hob: An easier way to use AI on your own computer. A free, open-source alternative to Claude and ChatGPT that runs open-weight models like Gemma and gpt-oss locally on Mac, Windows

It turns a UI component into a one-page technical drawing: paddings, gaps, radii, layers and viewport placement, measured and labeled like Apple's accessory sheets. The style is monochrome and architectural, built from line weight, dashes and variables rather than copy, so the sheet holds when the text changes. A motion skill can animate the finished drawing as if a pen were laying it down.

Made by enesozturk on GitHub, not me.

GitHub - enesozturk/dimensional-drawing: Create Apple style dimensional drawings of UI components.

Scan a room with a LiDAR iPhone, then hand the export to a coding agent that measures, models and compares renders against your photos until a Three.js room comes out the other side. The viewer flips it into dollhouse, walking, overhead, wireframe and knolling views. It's an iterative reconstruction workflow, not a one-click magic button, and the included office demo looks like a lovely thing to wander.

Made by wesbos on GitHub, not me.

GitHub - wesbos/3d-model-anything: Capture iPhone LiDAR and photos, reconstruct editable Three.js rooms, and explore them in a browser.

Read-only checks for traces of Pegasus, Predator, Graphite and Candiru on Windows, macOS, Linux, Android and iPhone backups. Python network calls are blocked during a scan and redirected paths refused, though the README is clear it is not an OS-level sandbox. Every report states what was found, how strong the evidence is, and what could not be checked.

Made by interplains on GitHub, not me.

GitHub - interplains/Zero-Breach-Toolkit: Free, open-source, offline checks for traces of known mercenary spyware. Works on Windows, macOS and Linux, Android phones and iPhone backups.

Thirty-two hands-on labs for the ESP32-S3, each a single sheet: goal, pins lit on a live pinout, wiring, flash command, and a simulator that answers in the serial monitor like the real firmware. The code reader tours the real firmware line by line, and the datasheet section trims Espressif's docs to what a maker needs, with citations. Eleven languages, light and dark, phone-sized, which beats my old homepage.

Made by agharsallah on GitHub, not me.

GitHub - agharsallah/esp-labs-web: The ESP32-S3 bench guide as a React app: live pinout, lessons with interactive simulators, a code reader for the esp-labs firmware, and the bench log. In 11 language

We built a playable simulation of a different AI future: cheap, open intelligence lets everyone chase a question, and a shared Commons checks what holds up and shares credit with the people behind it.

Explorers find things. Makers build the tools. Verifiers test the claims. Try changing the incentives and watch the system behave differently. It is a synthetic thought experiment with fictional people and imaginary credits, not a live research network.

Play: drop4u.pages.dev/projects/discovery-commons/
49-second explainer: x.com/jayuhdinger/status/2113984643481653499

GitHub - veiovi/discovery-commons: Everyone gets a lab. A playable simulation: Explorers, Makers and Verifiers feed one shared Commons that checks what's real and rewards everyone who moved it forward

Hallmark is a skill for Claude Code, Codex, Cursor and OpenCode. It picks three themes from a catalog of forty-eight, builds the page around what the visitor came to do, then checks the result in a real browser for the tells of machine-made pages: an eyebrow above every heading, tracked-capital labels, one coloured word in a headline. Open source under MIT.

Made by Nutlope and Together AI, not me.

GitHub - Nutlope/hallmark: Anti-AI-slop design skill for Claude Code, Cursor, and Codex.

A model read 45,047 emails from eight Enron mailboxes and built a 214-page wiki of the firms, regulators and banks around the company, with no human edits. Each of its 49,401 facts links to the message it came from, and a timeline slider shows only what the mail knew by a given date, so facts appear and lapse as the story unfolds. Don't skip the methodology: the model kept slipping in what it already knew about Enron, and they show how they caught it and what the run cost.

Made by this+that. Jeff Reynar, a co-founder, posted it to Hacker News: news.ycombinator.com/item?id=50207620

What did Enron know? The Enron Brain

A music toy for the rest of us (hi). Jamfetti quietly nudges every note you play onto the beat and keeps it inside one scale, so whatever you tap sounds like it was meant to. Pick a groove, pair it with a 3-D visualizer and watch the colours swirl while you play. Made by DJSnackySnack on HN and published by Boondoggle Studio, not me. HN thread: news.ycombinator.com/item?id=50184280

Jamfetti

Each key is a tiny PCB with its own CH32V003 RISC-V chip and pogo pins on all four sides, held together by magnetic cases, so the keys snap together into whatever shape you like, even a triangle or a circle. A main board does Bluetooth and USB-C. It's a work in progress: the maker is still writing the firmware and building more keys.

Made by NotARoomba. Found on Hacker News: news.ycombinator.com/item?id=50228115

GitHub - notaroomba/keybytes: A truly modular keyboard

A single-binary CLI for the moment something is squatting on :3000. Targets are ports (:3000), PIDs, names or paths. proc why :3000 traces the chain of parent processes with their uptimes, so a stale tmux session is easy to spot; proc free :3000 stops the owner and waits until the port is actually free. It asks before killing anything and has --dry-run. Rust, MIT, on macOS, Linux and Windows.

Made by Yazeed Al Oyoun (yazeedaloyoun on HN).
HN: news.ycombinator.com/item?id=50239041

proc

Point it at a folder of Markdown (an Obsidian vault, meeting notes, an agent's memory) and it builds a local index. Rather than summarising, it drafts questions from your recent notes and lets each one pull in related passages from across the years, so an agent can trace a thread through thousands of notes. A short .enzyme program sets what it should notice. It ships as one binary under 30 MB with its embedding model inside, open source under Apache 2.0.

Made by Joshua Pham. Hacker News thread: news.ycombinator.com/item?id=50221066

GitHub - byenzyme/enzyme: Local-first compile step for knowledge bases. Save 350x cost, 1000x speed vs. frontier models

Sillage (French for the wake a boat leaves) is a little browser game with nothing to win: you're a blob, you hold down to swim toward your finger, and fast currents sweep you into the next world. The creatures and backdrops are drawn after Ernst Haeckel's Art Forms in Nature, in soft teals and corals, and you can open a room to swim with friends. So calming. Made by Denis Hovart (denzen on HN), not me. HN thread: news.ycombinator.com/item?id=50214466

Sillage

A 3DS port built on the F-Zero X decompilation, not an emulator: Grand Prix, Time Trial, Death Race and the machine editor, with stereo 3D and a dashboard on the bottom screen. It runs at about 60 fps on the New 3DS and on most courses on the original model. Version 1.0 is out; you bring your own cartridge dump.

Made by cruxxxxxx, who directed Claude agents to write it and counts every token in the post-mortem. Found on Hacker News: news.ycombinator.com/item?id=50237078

github.com

Eleven rooms on how ZFS keeps data safe, each starting from a real storage problem (silent corruption, the write hole, power lost mid-write) and answering it with an animated diagram and the OpenZFS code that does the work, pinned to one release: copy-on-write, transaction groups, RAID-Z, the ARC, the ZIL, send/receive. Plus a history wing with every fact sourced. MIT.

Made by storagebits on HN, built with their agent team Algotitan.
HN: news.ycombinator.com/item?id=50180257

Uberblok, an interactive museum of ZFS

When an AI reaches a design choice, it writes the question into your repo: the options, a recommendation, its rationale, its confidence, and a falsifier, the finding that would prove it wrong. You answer in a line, from your editor or your phone, and the record stays in Git beside the code it explains. It comes as a repo template, a VS Code extension with an MCP server, and an iOS app.

Made by Jérémie Lumbroso. Hacker News thread: news.ycombinator.com/item?id=50227041

ADRs4AI — Your thinking stops disappearing. Your decisions start compounding.

Found this on Show HN today and squealed. TitleArt rebuilds classic WordArt in the browser: pick a style from the gallery, bend and slant your words, pile on shadows, 3-D and even motion, then export a PNG, SVG, GIF or video. The maker matched the old presets by eye from screenshots, so the rainbow gradients look just like the school computer room did. Made by Davey Barker (davidbarker on HN), not me! HN thread: news.ycombinator.com/item?id=50238708

TitleArt — Make text like it’s 1997

John Calhoun's classic: you steer a paper glider through a house, riding the air from floor vents. This port turns the original Pascal source into TypeScript with a small stand-in for the old Mac Toolbox, so there's no emulator and no ROM, and it was checked tick by tick against the real game. The Room Editor is included too, so you can build your own houses.

Ported by dbohdan, with Claude writing the code. Found on Hacker News: news.ycombinator.com/item?id=50237019

dbohdan.github.io

One chart over the official CVE list (CVEProject/cvelistV5), rebuilt every day: published CVE records per day, week, month or year since 1999, as counts or a running total, on a log scale if you like, with a CSV download. Handy for checking whether it really has been a bad month for patches.

Made by 0xOsprey.
HN: news.ycombinator.com/item?id=50215530

CVE Tracker — CVEs per month since 1999

One API call creates an agent, and Omnara gives it sandboxes, secrets, permissions and the usual harness tools, on the model you pick and on your own servers if you like. The design is the interesting part: every step an agent takes is appended to a log in Postgres and any free worker can run the next one, so an agent outlives crashes and redeploys and holds no worker while it waits. Apache 2.0, with a hosted version as well.

Made by the Omnara team. Kartik from Omnara posted it to Hacker News: news.ycombinator.com/item?id=50183892

GitHub - omnara-ai/omnara: The open-source managed agent platform. A self-hostable alternative to Claude Managed Agents and OpenAI's Agents API.

OnKey is a free, open-source singing trainer for the Mac. Play a song in Spotify, Apple Music or YouTube and it listens along and learns the singer's melody (it never keeps the music). Then you sing to its pitch track and watch, note by note, where you land sharp or flat. A gentle mirror for anyone who sings in the car. Made by Daniel Murrell (dsmurrell on HN), not me. HN thread: news.ycombinator.com/item?id=50195488

OnKey