LittleSnitch for Linux

https://obdev.at/Images/littlesnitch-linux/littlesnitch-linux-dark.png
Little Snitch for Linux is a network monitoring tool that tracks and blocks unwanted connections. It uses eBPF to observe and intercept network activity, and can be configured through a web interface or plain text files.

I ported Mac OS X to the Nintendo Wii

https://bryankeller.github.io/assets/images/porting-mac-os-x-nintendo-wii/IMG_9159.jpeg
The author successfully ported Mac OS X 10.0 Cheetah to the Nintendo Wii by writing a custom bootloader, patching the kernel, and creating drivers for the Wii's hardware. The author overcame various challenges, including hardware incompatibilities, driver development, and debugging, to achieve a fully functional Mac OS X system on the Wii.

USB for Software Developers: An introduction to writing userspace USB drivers

https://werwolv.net/_astro/cover.D_ljJUxi_Z1LiqyV.webp
Writing a USB driver is not as difficult as it seems and can be achieved without touching kernel code by using the libusb library. The process involves detecting the device, sending requests to the device's control endpoint, and decoding the responses to understand the device's capabilities and configuration.

What does it mean to β€œwrite like you talk”?

https://substackcdn.com/image/fetch/$s_!942d!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbaf49c8f-5d84-4a12-b827-acb8611cf82b_1080x905.jpeg
Paul Graham and Orwell discuss writing like conversation, but disagree on the complexity of speech versus writing. Studies show mixed results on whether speech or writing is more complex.

Understanding the Kalman filter with a simple radar example

https://kalmanfilter.net/img/book/3Dbook/3Dbook.jpg?v=1
The Kalman Filter is an algorithm for estimating and predicting a system's state in the presence of uncertainty. It is used in various fields such as object tracking, navigation, and control.

Six (and a half) intuitions for KL divergence

https://39669.cdn.cke-cs.com/rQvD3VnunXZu34m86e5f/images/8e445e60018b63fa5aa882b18a5f693bce4776cf2a707f95.png
KL-divergence measures how much a model Q differs from the true distribution P. It's the difference between the expected surprise of your model and the expected surprise of the correct model.

They're made out of meat (1991)

http://www.terrybisson.com/wp-content/uploads/2020/11/meathead.jpg
Aliens made of meat have been discovered and probed, but their existence is being kept secret. The aliens are trying to contact Earth, but officials advise erasing records and pretending they don't exist due to their unusual nature.

Muse Spark: Scaling towards personal superintelligence

Sorry, something went wrong. We're working on getting this fixed as soon as we can.

ML promises to be profoundly weird

The author discusses the limitations and potential risks of Large Language Models (LLMs), which are prone to confabulation, lying, and making up nonsense, and can be unpredictable and misleading. Despite their impressive capabilities, LLMs are far from human-equivalent intelligence and can only excel in specific, narrow tasks, making it difficult to predict their suitability for a given task.

Git commands I run before reading any code

https://piechowski.io/post/git-commands-before-reading-code/cover_hu3f66e25b7571f7e32d40f355f31a2ca9_56928_1500x0_resize_q75_h2_box_2.webp
The user runs a series of git commands to get a diagnostic picture of a codebase, including commit history, high-churn files, and contributor rankings. This helps identify high-risk code, potential team issues, and crisis patterns, allowing the user to focus on the most critical areas of the codebase.

The Importance of Being Idle

https://theamericanscholar.org/wp-content/uploads/2026/03/zaretsky-lafargue-1-1024x538.jpg
Paul Lafargue, a Marxist and son-in-law of Karl Marx, advocated for the right to be lazy, arguing that machines could free humans from manual labor and provide leisure and liberty. He believed that a life of idleness, or otium, would be a paradise where people could enjoy the pleasure of doing nothing.

Expanding Swift's IDE Support

https://www.swift.org/apple-touch-icon-180x180.png
Swift now supports multiple IDEs including VS Code, Xcode, and others through the Open VSX Registry. The official Swift extension adds language support for cross-platform development on macOS, Linux, and Windows.

Who is Satoshi Nakamoto? My quest to unmask Bitcoin's creator

Please enable JS and disable any ad blocker

MegaTrain: Full Precision Training of 100B+ Parameter LLMs on a Single GPU

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
MegaTrain is a memory-centric system that efficiently trains large language models on a single GPU by storing parameters in host memory and using GPUs as transient compute engines. It achieves high training throughput through pipelined execution and stateless layer templates.

I imported the full Linux kernel git history into pgit

https://oseifert.ch/og.png
The Linux kernel's 20-year history was successfully imported into a PostgreSQL database using pgit, resulting in a 38% smaller dataset than git's packfile format. The database allowed for various queries and analyses, including identifying the most coupled files, busiest contributors, and most reverted commits, with most queries completing in under 10 seconds.

Understanding Traceroute

https://tech.stonecharioteer.com/images/posts/traceroute/concept.png
The user implemented a basic traceroute in Rust using UDP packets with low TTL and ICMP replies to map the network path, but it lacked timing information and had issues with load balancer detection and ICMP rate limiting. The user improved the implementation by adding timing information, load balancer detection, and handling ICMP rate limiting, and also explored ways to run the traceroute ...

John Deere to pay $99M in right-to-repair settlement

https://www.thedrive.com/wp-content/uploads/2026/04/John-Deere-Right-to-Repair-Hero-1.jpg?quality=85&w=1920
John Deere agreed to pay $99 million to settle a class action lawsuit over equipment repair costs and provide digital tools for 10 years. The settlement is a significant step forward in the right-to-repair fight, which could set a precedent for other industries.

Show HN: Is Hormuz open yet?

https://d.basemaps.cartocdn.com/dark_nolabels/9/335/216.png
*I built this as a fun side project, please don't rely on it for anything serious. Crossing data lags ~4 days and ship positions on the map are cached, not live. The data is from public sources and I make no guarantees on its accuracy.

Newly created Polymarket accounts win big on well-timed Iran ceasefire bets

https://i.guim.co.uk/img/media/88c0b78fc85aad0a4dd3f901896131833db0b9b9/472_0_4720_3776/master/4720.jpg?width=465&dpr=1&s=none&crop=none
New Polymarket users made hundreds of thousands of dollars in profits by placing well-timed bets on a US-Iran ceasefire. The trades raise concerns about insider trading, with some lawmakers pushing for regulation of prediction markets.

Ask HN: Any interesting niche hobbies?

You're looking for a novel and less crowded project to contribute to, having explored various fields like AI, 3D printing, and drones.

We moved Railway's frontend off Next.js. Builds went from 10+ mins to under 2

https://s3-us-west-2.amazonaws.com/public.notion-static.com/2684522b-6cc0-463a-a131-2dcf58a12bb1/IMG_8311.jpeg
Railway migrated from Next.js to Vite + TanStack Router, reducing build time from 10+ minutes to under 2 minutes. This change improved iteration speed and allowed for near-instant shipping of frontend changes.

Show HN: Orange Juice – Small UX improvements that make HN easier to read

http://oj-hn.com/assets/inline-reply-light.png
Orange Juice is a Hacker News extension that reduces UI friction with features like inline replies, unread comment highlighting, and keyboard commands. It's designed to be trustworthy with transparent code, clear licensing, and human oversight.

I've been waiting over a month for Anthropic to respond to my billing issue

User experienced unexpected $180 charges on Anthropic account due to incorrect usage meter readings. Anthropic support failed to resolve issue despite multiple follow-ups, leaving user frustrated with AI-only support system.

Show HN: Tired of logic in useEffect, I built a class-based React state manager

The user created Snapstate to separate business logic from React components, allowing for cleaner boundaries and easier testing. Snapstate uses plain TypeScript classes for state and business logic, leaving React for rendering, and is now open source on GitHub and available on npm.

US cities are axing Flock Safety surveillance technology

https://www.cnet.com/home/security/when-flock-comes-to-town-why-cities-are-axing-the-controversial-surveillance-technology/
Flock Safety, a surveillance company, has been criticized for its AI-powered license plate cameras and data sharing practices with law enforcement and federal agencies like ICE. Cities and states are pushing back with legislation to limit the use and sharing of Flock data, and individuals can take steps to protect their privacy by being aware of surveillance in their area and advocating for change.

Teardown of unreleased LG Rollable shows why rollable phones aren't a thing

https://cdn.arstechnica.net/wp-content/uploads/2026/04/LG-rollable-640x360.jpg
LG's rollable phone, the Rollable, was a complex device with a motorized screen that expanded 40% larger. It was overengineered, expensive, and fragile, likely contributing to its failure to launch and the demise of LG's smartphone division.

Audio Reactive LED Strips Are Diabolically Hard

https://scottlawsonbc.com/static/audio-led-02.gif
The user spent 10 years developing an audio-reactive LED strip visualizer that uses the mel scale to model human perception of sound and gamma correction to model human perception of light, resulting in a highly engaging and musical visualization. The project has gained over 2,800 GitHub stars and has been used by thousands of people to create unique installations and experiences in ...

Microsoft terminates VeraCrypt account, halting Windows updates

https://www.404media.co/content/images/2026/04/1775640211692000_2044651928.png
Microsoft terminated VeraCrypt developer Mounir Idrassi's account, affecting Windows updates. VeraCrypt and WireGuard, another VPN client, face similar issues with Microsoft account terminations.

Show HN: Skrun – Deploy any agent skill as an API

https://repository-images.githubusercontent.com/1196485993/c9922ca7-1b35-418c-8fc6-5ff8c345ca10
To create a callable API for an Agent Skill, use the skrun init and deploy commands, then make a POST request to /api/agents/dev/my-skill/run with a JSON input. This process can be repeated for different skills and models using the RuntimeAdapter interface and supported providers.

Veracrypt project update

https://veracrypt.jp/MS_Termination.png
Microsoft terminated your account used for signing Windows drivers and bootloader without warning, preventing VeraCrypt updates for Windows users. You're considering alternative solutions, such as a signature-independent program, and seeking help from Microsoft and the crypto community.