Best gas masks, according to The Verge. “The Verge consulted journalists who covered the Portland protests in 2020, where federal and local forces regularly used tear gas against protesters over the course of four months.”

BLUE is an acronym for Build Language User Extensible. It is a self-hosting build-system fully written in Guile.

Tiny Model Checker: Systematic concurrency exploration in a few lines of Scheme, by db7.

Penrose, “Create beautiful diagrams just by typing notation in plain text.”

Cryptography 30 years apart: Ascon on an HP-16C

JSONata is a lightweight query and transformation language for JSON data.

Hel, a Helix Emulation Layer for Emacs.

Reactive jQuery for Spaghetti-fied Legacy Codebases (or When You Can’t Have Nice Things) (2020), by Meredith Matthews.

Koyaanisqatsi In Five Minutes, by Wyatt Hodgson.

The Evolution of a Lean Programmer

The Next Thing Will Not Be Big, says Glyph.

UNIX v4 in your browser.

wpex is a relay server designed for WireGuard, facilitating NAT traversal without compromising the end-to-end encryption of WireGuard.

BLAKE2s Hashing Accelerator: A Solo Tapeout Journey, by Julia Desmazes.

Pulling a New Proof from Knuth’s Fixed-Point Printer, by Russ Cox.

Stop Forwarding Errors, Start Designing Them in Rust.

If a Tree Falls: The trial of the Sycamore Gap killers, by Rosa Lyster.

Chess Roguelike Prototype, inspired by Slay the Spire.

Make 45 groups of 45!

FreeBSD 15.0 has been released

ML-KEM Mythbusting, by Sophie Schmieg.

Schubfach: The smallest state-of-the-art double-to-string implementation, by Victor Zverovich.

A Very Fast 64–Bit Date Algorithm, by Ben Joffe.

moss is a Unix-like, Linux-compatible kernel written in Rust and Aarch64 assembly.

The stack circuitry of the Intel 8087 floating point chip, reverse-engineered, by Ken Shirriff.

Wanix, a virtual environment kit for the local-first web, inspired by Plan 9.

Advent of Compiler Optimisations 2025, by Matt Godbolt.

My favourite small hash table

An unfinished Pompeian construction site reveals ancient Roman building technology, by Ellie Vaserman, James C. Weaver, Claire Hayhow, Kristin Bergmann, Celestino Grifa, Roberto Scalesse, Valeria Amoretti, Antonino Russo, Gennaro Iovino, Gabriel Zuchtriegel, and Admir Masic.

APL387 Unicode, a redrawn and extended version of Adrian Smith’s classic APL385 font with clean rounded look. By Madeline Vergani. Supports all BQN characters too.

World’s Most Stable Raspberry Pi? 81% Better NTP with Thermal Management, by Austin Pivarnik. “What if I could keep the CPU at a constant temperature?”

tv.garden, watch TV channels all across the globe.

I Want You to Understand Chicago, by aphyr. ICE is in full action.

In praise of dhh, long essay by Filipa Mendonça-Vieira.

Cloudflare outage on November 18, 2025, post-mortem by Matthew Prince.

Life as a Terrorist: Uncovering my FBI file (2013), by William T. Vollmann. “Reading one’s FBI file is rarely pleasant. The Unamericans do not snoop into our lives for the purpose of awarding us medals.”

Control structures in programming languages: from goto to algebraic effects, new book by Xavier Leroy.

The Bernoulli Manifesto, by Peter Luschny.

6 years after too much crypto: Test of time passed, by JP Aumasson.

Sōzu is a lightweight, fast, always-up reverse proxy server, written in Rust.

EPSON MX-80 Fonts, by Michael Walden.

An Asbestos-Bound, Fireproof Edition of Ray Bradbury’s Fahrenheit 451 (1953)

Summary of the Amazon DynamoDB Service Disruption in Northern Virginia (US-EAST-1) Region

Two Years After Cormac McCarthy’s Death, Rare Access to His Personal Library Reveals the Man Behind the Myth, by Richard Grant.

Cancelling async Rust, by Rain.

WireGuard topologies for self-hosting at home, by Gabriel Garrido. Interesting overview over some common configurations.

miniDusa is a finite-choice logic programming DSL within Racket similar to Dusa.

Scheme-rs, an embedded Scheme for the Async Rust Ecosystem. By Matthew Plant.

Glistix is a fork of the Gleam compiler which adds a Nix backend.

Pizarnik is a stack-based, concatenative language with extensible cases and evocative syntax for pattern-matching. By Vanessa McHale.

Olo is an imaginary color that can be seen by shooting lasers into the retina to isolate the response of M cone cells.

Kefir is an independent compiler for the C17/C23 programming language, developed by Jevgenij Protopopov.

Tracing Just-in-Time Compilation for Effects and Handlers (PDF), by Marcial Gaissert, CF Bolz-Tereick, and Jonathan Immanuel Brachthäuser.

Cap’n Web: a new RPC system for browsers and web servers, by Kenton Varda and Steve Faulkner.

ocrs is a Rust library and CLI tool for extracting text from images, also known as OCR (Optical Character Recognition). Uses a small neural network model.

The 100 MHz 6502, by Jürgen Müller. Same footprint as the original!

Writing an operating system kernel from scratch, by Uros Popovic. In Zig for RISC-V.

Ceu is a synchronous programming language that reconciles Structured Concurrency with Event-Driven Programming.

Jiff is a datetime library for Rust.

Some interesting stuff I found on IX LANs, by Benjojo.

The Naming of Tack Symbols in Unicode. Aggravating!

Kernel-hack-drill and a new approach to exploiting CVE-2024-50264 in the Linux kernel, by Alexander Popov. Very detailed writeup. “I can say that it’s the worst bug to exploit I’ve ever seen.”

Я (pronounced “ya”), by Murat Kasimov, is a new programming language built on natural transformations.

AmneziaWG is a fork of WireGuard-Go eliminating the identifiable network signatures that make WireGuard easily detectable by Deep Packet Inspection (DPI) systems.

Gate-level emulation of an Intel 4004 in 4004 bytes of C, writeup for Nicholas Carlini’s IOCCC entry.

FreeBSD Kernel Development Recipes (PDF), by Mark Johnston.

Atmos is a programming language reconciles Structured Concurrency with Event-Driven Programming, and compiles to Lua.

Optimized Binary GCD for Modular Inversion (2020), by Thomas Pornin.

Sangaku Puzzle I Can’t Solve, by Sameer Shah. I didn’t know the trick with inversion of the plane really.

χrust implements XPath, XQuery, and XSLT in Rust.

Pica Numbers in typewriter fonts. By David Jones.

Replication of Quantum Factorisation Records with an 8-bit Home Computer, an Abacus, and a Dog, by Peter Gutmann and Stephan Neuhaus. Funny.

The rise of Whatever, by eevee.

Tree Borrows, by Neven Villani, Johannes Hostert, Derek Dreyer, and Ralf Jung. A new aliasing model for Rust.

Death by Accidental Complexity (2010), talk by Ulf Wiger. How to implement concurrent state machines.

Come try out Piglet, by Arne Brasseur. Piglet is a Clojure-like Lisp written in JavaScript.

SQIsign, a post-quantum cryptography scheme with very compact keys and signatures.

crash-gcore, in case you ever wanted to make userspace core dumps from a kernel memory dump.

More than you wanted to know about how Game Boy cartridges work, by Allison Parrish.

How to reverse engineer an analog chip: the TDA7000 FM radio receiver, by Ken Shirriff.

I Deleted My Second Brain, by Joan Westenberg.

How to Surf the Web in 2025, and Why You Should

Report: Flag Sharing Incidents During GPN CTF 2025, ouch.

LZEXE was the first wide known executable file compression for PCs under MSDOS. Source code now available! By Fabrice Bellard.m

Micro Common Lisp is a tiny interpreter for a tiny and purely symbolic subset of Common Lisp.

Berry is a ultra-lightweight dynamically typed embedded scripting language. A reasonable alternative to Lua.

ltx-talk, a new LaTeX class for typesetting presentations. Very early, but hopefully gets rid of some of Beamer’s idiosyncrasies.

The Missing 11th of the Month (2015).

SLAM! (1951), a bidding game for two that departs a little from Bridge but keeps all of the flavor. (Interestingly, due to being a two player game, it also removes practically all ways to cheat at Bridge.)

The Venetian origins of roman type, by Riccardo Olocco.

System ♢⃝ (PDF), Baseball for the skeptical and apathetic. Slides by Slim Lim.

A break from programming languages, by Alexis King.

Breaking the Sorting Barrier for Directed Single-Source Shortest Paths, by Ran Duan, Jiayi Mao, Xiao Mao, Xinkai Shu, and Longhui Yin. “We give a deterministic O(m log^2/3n)-time algorithm for single-source shortest paths (SSSP) on directed graphs with real non-negative edge weights in the comparison-addition model. This is the first result to break the O(m+n log n) time bound of Dijkstra’s algorithm on sparse graphs, showing that Dijkstra’s algorithm is not optimal for SSSP.” (Won STOC Best Paper Award.)

A Guided Tour of Polarity and Focusing (YouTube), talk by Chris Martens. Excellent introduction! Additional material.

Multi-Stage Programming with Splice Variables, by Tsung-Ju Chiang and Ningning Xie (ICFP 2025).

Steel is an embeddable scheme interpreter with bytecode VM, written in Rust.

Zeekstd, a Rust implementation of the Zstandard Seekable Format.

Precision Clock Mk IV, by mitxela. What a level of detail!