Teal – A statically-typed dialect of Lua

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

A Git hook for agent-assisted development. Before your agent’s code ships, Sphinx asks you a question about what it actually does.

Furifont, a Japanese font that shows furigana

A Japanese font that shows furigana by itself.

Matthew Prince on why Cloudflare offers a free version and always will (2016)

Regex visualized as 3D marble run

Type a regex and a string, then watch a marble run the match. See backtracking happen, flags pile up, and catastrophic patterns flood the machine.

Lean now ships with verified kernels

Leonardo de Moura — Creator of Lean and Z3

Fun Extending the C Preprocessor

Interactive Linear Programming in the Browser

lpviz is an interactive web app for visualizing linear programming solvers. Draw your constraints and objective, and see how methods like IPM, PDHG, Simplex, the Ellipsoid method, and Central Path solve your problem.

Parser Combinators

Better than regex!

DeepSeek-v4.1-Flash-1017

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

Southern ground hornbill gets 3D printed beak prostheses at Artis Zoo

An injured southern ground hornbill at Artis Zoo in Amsterdam has received two 3D-printed prostheses to replace the broken upper and lower parts of its beak. And with great success. The bird was already using its new beak on the day of the surgery. “As far as is known, this is the first time in the world both parts of a bird’s beak have been restored in this way,” Artis said in a press statement on Thursday.

Pele – Mermaid diagrams as themeable SVG

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

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

DeepSeek search and fetch – $0.75 per 1000 successful requests

The Search API and the Fetch API give agents and RAG applications access to live web content:

You could have invented transformers from memory

Every layer is a memory store

How the Elizabeth Holmes documentary “You Can See Everything” is deceiving

Did you realize the film was actually manipulating you?

Making chicken transparent using Dorito dust

Modifying the optical properties of biological tissues with tartrazine

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.

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.

NY announces game ownership bill requiring ownership rather than licensing

New York joins Pennsylvania in protecting gamers.