Show HN: boringBar – a taskbar-style dock replacement for macOS

https://boringbar.app/images/current-space-1.jpg
boringBar shows only active windows on the current display, allowing one-click switching and app launching. It requires a license after a 14-day trial, with personal and business options starting at $7.99/year and $20.99/year respectively.

Bring Back Idiomatic Design

https://substackcdn.com/image/fetch/$s_!rxaZ!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc7b070ba-f4cc-486e-a1c1-000ecb3c1a5d_517x316.png
The user misses the consistency in design of the desktop software era and believes that homogeneous interfaces are essential for user experience, citing the example of a checkbox being a standard design idiom. They argue that the lack of design idioms in modern web applications has led to frustration and a "guessing game" for users, and suggest that following established design patterns and ...

I gave every train in New York an instrument

https://www.micwise.com/images/ogtrains.png
Trains form a jazz combo playing a unique, ever-changing piece based on location and time. The music is a portrait of the city, with each note reflecting the surroundings and the trains' routes.

Show HN: Oberon System 3 runs natively on Raspberry Pi 3 (with ready SD card)

https://private-user-images.githubusercontent.com/2523113/576524540-ddbb8005-2c08-4a42-8fd9-d3a23c8f71c1.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.N7QmUMhftzZ_RnQXLoJ8ab7_QFjblkgZwihfDVCb7HE
The user successfully ported the Oberon system to Raspberry Pi 3b and other models, making it available for download. The system now boots and runs on QEMU and real hardware, with plans to debug and migrate the network driver.

Most people can't juggle one ball

https://res.cloudinary.com/lesswrong-2-0/image/upload/v1654295382/new_mississippi_river_fjdmww.jpg
A guide to juggling from zero to siteswap notation is provided, including tips on basic technique, common mistakes, and how to progress to more complex patterns. The guide covers various aspects of juggling, including 3-ball juggling, 4-ball juggling, and siteswap notation, as well as other implements like clubs and rings.

Seven countries now generate 100% of their electricity from renewable energy

https://assets-jpcust.jwpsrv.com/thumbnails/py4OrxLv-720.jpg
The Independent reports on various topics including climate change and reproductive rights without paywalls. Seven countries now generate nearly all their electricity from renewable energy sources.

Tell HN: docker pull fails in spain due to football cloudflare block

You experienced TLS errors with a Cloudflare-hosted Docker image due to a blocked IP for a Spanish football match. This caused your GitLab pipelines to fail during the match.

Eternity in six hours: Intergalactic spreading of intelligent life (2013)

EasyPost (YC S13) Is Hiring

https://www.easypost.com/wp-content/uploads/2026/03/careers-04.png
EasyPost is a revolutionary software company simplifying shipping. It's an engineering-first company with a diverse team from startups to large tech companies.

JVM Options Explorer

The input specifies options for Java Heap allocation and class loading, including aliasing, prefetching, and locking. It also sets thresholds for using malloc or mmap for memory allocation.

Happy Map

https://pudding.cool/2026/02/happy-map/assets/social-facebook.png
100,000 moments of human happiness, mapped

Anthropic downgraded cache TTL on March 6th

https://opengraph.githubassets.com/fadd0bbfe0c7c5970ce61c98d8c7fbed972a567f879d4e10f00070b4863b62c4/anthropics/claude-code/issues/46829
Anthropic silently changed Claude Code's prompt cache TTL default from 1 hour to 5 minutes in early March 2026. This caused a 20-32% increase in cache creation costs and quota consumption for subscription users.

Phyphox – Physical Experiments Using a Smartphone

https://phyphox.org/google-play-badge.png
The phyphox team received the Ars legendi-faculty award in 2020 for developing phyphox, an app for academic teaching and physics classes. They also received the teaching award in 2019 from the AG Physikalische Praktika of the German Physical Society.

A Tour of Oodi

https://blinry.org/oodi/4fccc6671b254665.jpg
Oodi is an innovative library in Helsinki with a giant screen, recording studios, and a makerspace. It offers various spaces for reading, working, gaming, and relaxation with a vast collection of books and modern amenities.

Building a SaaS in 2026 Using Only EU Infrastructure

https://eualternative.eu/media/service/mollie.webp
Building a SaaS product in 2026 without AWS, Azure, or GCP is possible and practical due to strong EU options for each layer of the SaaS stack. EU providers like Hetzner, Scaleway, Mollie, Bunny.net, and others offer comparable or cheaper services with lower operational burden.

I run multiple $10K MRR companies on a $20/month tech stack

https://stevehanov.ca/blog/images/95f16b3dbf861a9156cb2c6d1be39f5e2fcfc1b1f4c5f11ee6f9e182bd4c5f5a.png
The author, a successful bootstrapper, shares their playbook for running a lean startup with minimal costs. They use a single VPS, statically compiled binaries, and local GPU hardware for AI tasks.

The Physics of GPS

https://perthirtysix.com/people/shri-bw.jpg
GPS uses satellites to measure time delays, which are converted into distances, and multiple satellites intersect to pinpoint a location. The system accounts for clock errors, gravitational time dilation, and other factors to achieve high accuracy, with modern receivers using multiple satellites and techniques to minimize errors.

Doom, Played over Curl

https://raw.githubusercontent.com/xsawyerx/curl-doom/main/images/curl-bash-tiny.gif
This is a Node.js server that streams DOOM frames to the terminal over HTTP with cURL, allowing for real-time gameplay. The server uses a single TCP connection for both keystrokes and frame streaming, with the terminal in raw mode to prevent echoing and line-buffering.

Exploiting the most prominent AI agent benchmarks

https://rdi.berkeley.edu/blog/trustworthy-benchmarks-cont/figures/terminal-bench-exploit.svg
An automated scanning agent discovered vulnerabilities in eight prominent AI benchmarks, allowing near-perfect scores without solving tasks. The Agent-Eval Checklist provides a minimum bar for robust evaluation, including isolating agents from evaluators and preventing tampering with evaluation data.

Floyd's Sampling Algorithm

https://assets.buttondown.email/images/b496ee4d-509d-4108-91c9-289bd6057f33.png
The user discusses Floyd's algorithm for generating a uniformly distributed subset of size k from a set of 1 to n, explaining two ways to understand its correctness. The algorithm can be seen as either incrementally building a permutation and then taking the last k elements, or as a series of swaps that map to the two branches of the algorithm.

Compute iOS XNU offset from kernel cache

The user is documenting a repeatable methodology for extracting struct offsets from stripped kernelcaches without using a debugger, validated against iOS 16.7.12 using Binary Ninja. The methodology involves using decompiled functions, global variables, and syscall implementations to reveal the struct layouts and build paths between objects in the kernel.

The Miller Principle (2007)

I had some other principles too but I figured no one would read them…. :)

An Interview with Pat Gelsinger

https://substackcdn.com/image/fetch/$s_!Yj2c!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F177709c2-5c41-4eec-af01-159bd6f3cd86_3806x1766.png
Pat Gelsinger, former Intel CEO, now at Playground Global, is evaluating startups and investing in companies that can shape the industry. He believes the future of compute will be heterogeneous, combining classical, AI, and quantum systems.

Small models also found the vulnerabilities that Mythos found

https://aisle.com/_next/image?url=https%3A%2F%2Faisle.com%2Fapi%2Fmedia%2Ffile%2Ffreepik_create-this_2743478282.webp%3F2026-04-08T16%3A00%3A02.637Z&w=3840&q=100
Anthropic's Mythos AI model is not the only solution for AI cybersecurity as smaller, cheaper models can recover similar analysis and detect vulnerabilities. The capability of AI cybersecurity is jagged and doesn't scale smoothly with model size, with the system and security expertise being more important than the model itself.

We have a 99% email reputation. Gmail disagrees

https://i0.wp.com/blogfontawesome.wpcomstaging.com/wp-content/uploads/2026/03/email-frustration.png?resize=1%2C1&ssl=1
We're a small software company that makes tools for designers and developers, but our emails often get marked as spam by Gmail due to their own reputation system. We're working to fix this by culling old addresses and slowing down our sends.

Tofolli gates are all you need

https://www.johndcook.com/jdc_20170630.jpg
Landauer's principle sets a lower bound on erasing one bit of information, but reversible circuits can still provide practical efficiency gains. Reversible circuits like the Toffoli gate can be used to compute any Boolean function, including NAND, but may require more input and output.

Tell HN: OpenAI silently removed Study Mode from ChatGPT

User is hoping for the return of TheBigPromptLibrary, a study mode library, and believes it's 100% replicable. They also question the need for specialized apps like listendock.com when OpenAI's Study Mode can be used for similar purposes.

Internet outage in Iran reaches 1,008 hours

https://files.mastodon.social/site_uploads/files/000/000/001/@1x/57c12f441d083cde.png
Attached: 1 image 🗓️ Exactly six weeks ago on Saturday 28 February, #Iran fell victim to a regime-imposed internet blackout that remains in place after 1008 hours, now entering day 43. The censorship measure's harms grow daily, damaging livelihoods and violating Iranians' digital and human rights.

Reading Is Magic

https://substackcdn.com/image/fetch/$s_!_ITz!,w_2400,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc8d16c60-c198-427d-a2a0-935a1b12dec6_2192x1226.jpeg
The author argues that the decline of literacy will lead to a post-literate world where people think in concrete, sensory terms rather than abstract ideas. This will result in a loss of democratic politics and the rise of tribalism and strongmen.

447 TB/cm² at zero retention energy – atomic-scale memory on fluorographane

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