OpenCode – The open source AI coding agent

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OpenCode is a free, open-source coding agent available on macOS, Windows, and Linux, trusted by 5M developers. It offers private coding with reliable AI models through its Zen platform, ensuring consistent performance and quality.

Our commitment to Windows quality

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Microsoft is making changes to Windows 11 to improve performance, reliability, and user experience, including taskbar customization, AI integration, and reduced Windows Update disruption. The company is focusing on making Windows 11 more responsive, consistent, and secure, with a goal of delivering better experiences with greater confidence, month after month.

Heart Attack and Stroke Risk Jumps When People Stop Taking GLP-1s

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Researchers found that stopping GLP-1 weight-loss drugs leads to increased heart attack and stroke risk, with benefits not fully returning after restarting. Discontinuation of GLP-1s causes a lasting scar on heart health, highlighting the need for better adherence and treatment plans.

We rewrote our Rust WASM Parser in TypeScript – and it got 3x Faster

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The team initially built a WASM parser in Rust for a custom DSL, but found that the boundary overhead between WASM and JS dominated the computation time. They ported the parser to TypeScript and optimized the streaming architecture to reduce the number of parse calls, resulting in a significant performance improvement.

France's aircraft carrier located in real time by Le Monde through fitness app

Contactez licensing[@]groupelemonde.fr pour obtenir une autorisation d'accΓ¨s. Incluez une copie de la page d'erreur avec votre adresse IP et votre identifiant de requΓͺte (RID).

Show HN: We built a terminal-only Bluesky / AT Proto client written in Fortran

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Fortransky is a terminal Bluesky client written in Fortran with a Rust decoder. It connects to Bluesky via Jetstream or relay-raw streams with session state saved in ~/.fortransky/session.json.

I love my dumb watches

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The author initially liked smartwatches but found them redundant and addictive, leading to a preference for traditional automatic watches. They now appreciate the simplicity and durability of mechanical watches.

Attention Residuals

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Attention Residuals (AttnRes) is a drop-in replacement for standard residual connections in Transformers that enables selective aggregation of earlier representations via learned attention. It consistently outperforms the baseline across all compute budgets and mitigates PreNorm dilution.

A Japanese Glossary of Chopsticks Faux Pas

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Using chopsticks in certain ways is considered taboo in Japan, including passing food between pairs and holding them between hands when saying thanks. Proper etiquette involves eating rice first, then side dishes, and placing chopsticks on a rest when finished.

The Los Angeles Aqueduct Is Wild

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The Los Angeles Aqueduct is a 300-mile gravity-fed system that brings water from the Eastern Sierra to LA, but its construction and operation have been marked by controversy and environmental impact. The aqueduct's design and expansion have had significant effects on the Owens Valley and surrounding ecosystems, highlighting the need for careful consideration of costs beyond the balance sheet.

Show HN: I made an email app inspired by Arc browser

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define brings email, chat, meetings, docs, and video togetherβ€”so teams decide faster, switch less, and stay in flow.

VisiCalc Reconstructed

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The user discusses rebuilding a minimal VisiCalc clone from scratch, focusing on a data model, formula evaluator, and simple UI to display cells, and implements a recursive descent parser to calculate formulas on the fly. The user also implements a basic UI using the ncurses library, allowing users to navigate through cells, edit them, and display their values, with features like ...

Show HN: Baltic shadow fleet tracker – live AIS, cable proximity alerts

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The Shadow Fleet Tracker Light monitors 1200+ vessels from the Ukrainian GUR catalogue against live AIS data, plotting positions on a self-updating map. It detects Russia-West transshipment patterns and flags proximity to undersea cables.

Work_mem: It's a Trap

Henrietta Dombrovskaya's Postgres cluster was killed by the OOM killer after consuming 2 TB of RAM due to a badly written query that accumulated memory in a single context. The issue was caused by the query's design, not a Postgres bug, and can be mitigated by fixing the query, using query timeouts, and monitoring with pg_log_backend_memory_contexts.

Delve – Fake Compliance as a Service

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Delve, a compliance company, uses fake evidence and fabricated audit reports to make companies appear compliant with frameworks like SOC 2, ISO 27001, HIPAA, and GDPR. Delve's platform relies on pre-populated templates, manual forms, and dodgy auditors to produce reports that falsely claim independent verification, putting clients at risk of criminal liability and hefty fines.

Parallel Perl – Autoparallelizing interpreter with JIT

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The user discusses issues with CPAN and PBP, and their decision to use STM32F103 instead of ATmega328 for faster performance. They also mention their use of CAN protocol, Perl, and Rust for various projects and tasks.

NumKong: 2'000 Mixed Precision Kernels for All

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The author has released a new open-source project called NumKong, which is a collection of over 2,000 SIMD kernels for mixed precision numerics, and has discussed the state of RISC-V, Intel's Advanced Matrix Extensions (AMX), and Apple's Scalable Matrix Extensions (SME). The author has also compared NumKong to other libraries such as OpenBLAS and Eigen, highlighting its advantages in terms of ...

The worst volume control UI in the world (2017)

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Developers and designers on Reddit created a thread to come up with the worst volume control interface ideas for fun. The exercise helps strengthen creative muscles and think outside the box.

Entso-E final report on Iberian 2025 blackout

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On 28 April 2025, a total blackout occurred in continental Spain and Portugal, with disruptions in a small area of Southwest France. An Expert Panel investigated the incident and released a final report on 20 March 2026 with recommendations to prevent similar events.

Launch HN: Sitefire (YC W26) – Automating actions to improve AI visibility

Vincent and Jochen from sitefire developed a platform to improve brand visibility in AI search by analyzing and optimizing content for AI search engines. Their platform generates synthetic prompts, analyzes AI search results, and creates optimized content to increase AI bot requests and human referrals to clients' pages.

Show HN: An open-source safety net for home hemodialysis

Safehemo is a pre-alpha demonstration for home dialysis, connecting patients, clinics, and communities in a secure ecosystem. It provides real-time monitoring and alerts for critical events, but is not a medical device and should not be used in emergencies.

The Social Smolnet

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User implemented social features in Offpunk after realizing blogs and email already formed a decentralized social network. Offpunk allows users to share and reply to online content with simple email commands.

Meme Buildings

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The author discusses meme buildings, which are structures that endear themselves to the public despite lacking architectural significance. These buildings often have a unique appearance or nostalgic value.

Video Encoding and Decoding with Vulkan Compute Shaders in FFmpeg

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FFmpeg uses Vulkan Compute to accelerate encoding and decoding of professional-grade video on consumer GPUs, unlocking GPU compute parallelism at scale without specialized hardware. This approach complements Vulkan Video's fixed-function codec support, extending acceleration to formats and workflows it doesn't cover, making it an ideal starting point for making compute-based codec ...

Super Micro Shares Plunge 25% After Co-Founder Charged in $2.5B Smuggling Plot

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Flash-KMeans: Fast and Memory-Efficient Exact K-Means

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Researchers improved k-means algorithm for online use by addressing GPU bottlenecks through flash-kmeans, a new implementation. It achieves up to 17.9x speedup over best baselines and outperforms industry-standard libraries.

Regex Blaster

Write regex patterns to destroy falling strings. πŸ‘Ύ Orange = enemies (destroy them). πŸ›‘ Green = friendlies (don't hit them!).
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The FSF received a notice about a settlement in the Bartz v. Anthropic lawsuit over copyright infringement of works used to train LLMs. The FSF urges Anthropic to provide LLMs to users in freedom, including complete training inputs and source code.

ArXiv declares independence from Cornell

ArXiv, a preprint server, will become an independent nonprofit corporation on July 1 after over 2 decades of being hosted by Cornell University. This move aims to raise more money from a broader range of donors to fund staffing and technology for the site's growing number of preprints.

Too Much Color

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The author of csskit developed a minifier test suite and discovered that precise enough is almost never more than 3 decimal places for colours like oklch and oklab, and even less for lab and lch. The author found that 3dp is enough for most colour operations, with 1dp sufficient for lab/lch and 0dp for sRGB, and that this rule holds uniformly across different colour spaces and operations.