Show HN: High-quality duck audio synthesizer

A live duck pond: a small flock of mallards, every call synthesized as it happens and heard from where you stand on the bank.

Furifont, a Japanese font that shows furigana

A Japanese font that shows furigana by itself.

Superoptimizing an FPU Emulator

Lean now ships with verified kernels

Leonardo de Moura — Creator of Lean and Z3

Types of types: Haskell's Kind system

Kinda?

Pele – Mermaid diagrams as themeable SVG

Pele is a lightweight open source library that renders Mermaid diagrams to SVG, themed with CSS variables.

DeepSeek-v4.1-Flash-1017

We’re on a journey to advance and democratize artificial intelligence through open source and open science.

Dam removals are bringing fish back across the northeastern United States

While the demolition of big dams in the West gets more attention, many of these often-obsolete obstructions are also coming out of northeastern streams and rivers—and herring are returning in droves

You could have invented transformers from memory

Every layer is a memory store

I Became a Citizen of Japan

I became a citizen of Japan. Let me share about it. Some is my anecdotal experience, some my opinion, and some facts. Parsing which of these is what in each sentence is not going to happen. EDIT: I have seen some online reaction to this, and appreciate your kind comments. If you are thinking abou

Gold is now the top U.S. export

Surging U.S. gold exports have overtaken traditional top exports, fueling speculation that rising global demand—particularly from foreign powers seeking alternatives to dollar-based reserves—is reshaping precious metals markets.

The Commodore 64 hardware simulator: break chips and pins, see the results

Commodore 64 hardware simulator. Contribute to antirez/c64-hw-simulator development by creating an account on GitHub.

Solar surpasses nuclear power globally for first time

Solar and wind are increasingly outpacing nuclear power globally, with solar generation surpassing nuclear for the first time in 2025, according to WNISR 2026. The report highlights nuclear’s slow growth, lengthy construction timelines and limited small modular reactor deployment, contrasting them with rapid renewables and battery expansion.

Source code of the Estonian online voting system

IVXV online voting system. Contribute to valimised/ivxv development by creating an account on GitHub.

Making chicken transparent using Dorito dust

Modifying the optical properties of biological tissues with tartrazine

Custom server to revive neato bots

custom server for the undead robot vacuum cleaners - revive your Neato with the power of Vacuula - vacuula/vacuula

Show HN: Esp32sim – Run ESP32 firmware in the browser

Open-source ESP32 emulator. Run real firmware locally or in your browser — no hardware, no cloud, no subscription. - mikroverk/esp32sim

Bleached corals thrive within days when touching healthy neighbour

A coral fragment can form a tissue bridge with a dying counterpart — and provide it with crucial microalgae.,A coral fragment can form a tissue bridge with a dying counterpart — and provide it with crucial microalgae.

Codex Desktop continuously generates Crashpad pending dumps

Summary Codex Desktop is continuously adding paired .dmp and _sidecar.json files under: ~/Library/Application Support/com.openai.codex/web/Crashpad/pending On my machine this directory grew to 4.9G and 54,504 files in one day. The count ...

NY announces game ownership bill requiring ownership rather than licensing

New York joins Pennsylvania in protecting gamers.