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.

Help Keep Thunderbird Alive

https://updates.thunderbird.net/media/img/thunderbird/appeal/dec24/forest-roc.png
Thunderbird is funded by user contributions, not ads or corporate funding, to provide a private and customizable email experience. Users can support Thunderbird by donating to help maintain servers, fix bugs, and develop new features.

Show HN: CSS Studio. Design by hand, code by agent

https://images.motion.dev/motionscore/site-bg.png
CSS Studio offers a suite of design tools for editing layout, styles, and animations on a webpage. It sends updates to a local AI agent for implementation, automating code writing, review, and deployment.

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.

Wit, unker, Git: The lost medieval pronouns of English intimacy

https://ichef.bbci.co.uk/images/ic/480xn/p0nc7tyq.jpg.webp
The English language has lost many personal pronouns over the centuries, including the dual form "wit" which referred to two people, due to simplification and changes in social and political norms. Despite this, some Old English pronouns like "he", "it", and "we" have survived more than 1,000 years of history and upheaval, almost intact.

Creating the Futurescape for the Fifth Element [2019]

https://cdn.theasc.com/Fifth-Element-Effects-Featured-Image.jpg
The Fifth Element is a visually stunning film that features a combination of practical and digital effects, with a team of artists and technicians working together to bring the film's futuristic world to life. The film's visual effects were created by Digital Domain, with a team of over 170 artists and technicians working on the project, led by visual effects supervisor Mark Stetson and ...

Launch HN: Relvy (YC F24) – On-call runbooks, automated

https://www.relvy.ai/aniket_dash.jpeg
-check if any marketing promos went live (event_type = 'PROMO_LAUNCH'). These can sometimes cause traffic spikes. Relvy AI executes your natural language runbooks for on-call and incident response. It is equipped with foundational tools that can analyze telemetry data and code, and can be extended with custom connectors for your internal workflows. >check cleanup job logs for the ...

Open Source Security at Astral

https://astral.sh/static/OpenGraph/Astral.jpg
The Astral organization shares techniques to secure their tools and GitHub Actions workflows, including pinning actions to specific commits and limiting permissions. They also enforce strong 2FA, branch protection rules, and immutable releases to prevent account and repository compromises.

Haunted Paper Toys

http://ravensblight.com/leftSquigly.jpg
The toy shop offers a variety of unusual paper toys, including haunted houses, monsters, and other dark delights, which can be printed and assembled with common supplies.

Introduction to Nintendo DS Programming

https://www.patater.com/files/projects/manual/images/passme.png
The homebrew community allows individuals to create and run their own games on the Nintendo DS without needing official development contracts or equipment, using devices like passthroughs and NoPass devices to bypass copy protection. To get started, one should choose a Slot-1 device, such as the R4DS, M3 Real, or Cyclo DS Evolution, which supports DLDI and can run homebrew software from a microSD card.

Dr. Dobb's Developer Library DVD 6

https://ia800208.us.archive.org/10/items/DDJDVD6/DDJ_DVD6.jpg
Welcome to DDJ Devloper Library DVD-ROM, which contains articlesfrom Dr. Dobb's Journal from January 1988 through December 2008,articles from C/C++ Users...

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.

Tree Calculus

Tree Calculus was discovered by Barry Jay. Check out his book and blog! The demos on this website were developed by Johannes Bader. See here for more background, resources and contact info. There is one operator △ that computes whenever it is acting on three values. Grammar: E ::= △ | E E Visually, △ is a tree node and the application of E1 to E2 attaches E2 to the root of E1 on the right. ...

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.

Claude mixes up who said what and that's not OK

https://dwyer.co.za/static/claude-bug-1.png
Claude sometimes sends messages to itself and mistakenly attributes them to the user, leading to incorrect assumptions. This 'who said what' bug is distinct from hallucinations and permission issues, and seems to be a problem with the model's internal labelling rather than its behavior.

Improving storage efficiency in Magic Pocket, Dropbox's immutable blob store

https://dropbox.tech/cms/content/dam/dropbox/tech-blog/en-us/2026/march/magic-pocket-compaction/diagram/Diagram%201.png/_jcr_content/renditions/Diagram%201.webp
Dropbox's Magic Pocket storage system uses a layered compaction strategy to reduce storage overhead, which includes L1, L2, and L3 strategies to handle different volume fill levels. The system adapts to workload shifts and keeps metadata pressure, network traffic, and compute utilization within safe limits.

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.

Show HN: Moon simulator game, ray-casting

https://mooncraft2000.com/artwork/MooncraftMap.jpg
If you enjoy this free game, consider buying me a sake coffee…

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

The author investigates the identity of Satoshi Nakamoto, Bitcoin's pseudonymous creator, and suspects Adam Back, a British cryptographer, after noticing similarities in their writing styles and interests. The author discovers that Back's background and activities align with Satoshi's, including his involvement in the Cypherpunks movement and his invention of Hashcash.

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.

C# in Unity 2026: Features Most Developers Still Don't Use

https://darkounity.com/api/images/featured-image-csharp-modern-unity.webp
Learn practical C# features Unity developers still skip in 2026: properties, tuples, LINQ performance, and records with real examples.

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.

Muse Spark: Scaling towards personal superintelligence

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Process Manager for Autonomous AI Agents

https://botctl.dev/og-image.png
Claude runs a code-reviewer bot in a loop, saving sessions and picking up changes automatically. It can be controlled and monitored from the browser or TUI.

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.

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.

Map Gesture Controls - Control maps with your hands

https://sanderdesnaijer.github.io/map-gesture-controls/og-image.webp
Browser-native hand gesture controls for OpenLayers maps. Pan, zoom, and navigate maps using hand gestures powered by MediaPipe. No backend required.

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.