A macOS app that blurs your screen when you slouch

https://opengraph.githubassets.com/4ad63423c58c794e7deeb568f673b11c874756c572b41f0afbc66c29a33b432a/tldev/posturr
Posturr uses Mac's camera to monitor posture in real-time, blurring screen when slouching. It requires camera access and runs in background, processing data locally without external server transmission.

Using PostgreSQL as a Dead Letter Queue for Event-Driven Systems

The user implemented a Dead Letter Queue (DLQ) using PostgreSQL to handle failures in a system that generated daily business reports from multiple data sources. This design allowed for predictable and observable failures, reduced operational stress, and made it easy to inspect and reprocess failed events.

A flawed paper in Management Science has been cited more than 6,000 times

https://statmodeling.stat.columbia.edu/wp-content/uploads/2026/01/Screenshot-2026-01-22-at-09.18.44-1024x771.png
Andy King's experience attempting to replicate a highly influential study on corporate sustainability highlights institutional failures in the scholarly publication process, where authors and journals often ignore or downplay criticisms and errors. The case emphasizes the need for reforms in research integrity policies, transparency, and accountability to ensure the trustworthiness of ...

Doom has been ported to an earbud

https://doombuds.com/assets/focusjak-BWM7Q_35.webp
The project involves a serial server, web server, and static webpage to stream DOOM on earbuds via UART connection. The earbuds' limited bandwidth requires compressing the video stream to MJPEG, achieving a maximum of 18 FPS.

Show HN: Bonsplit – Tabs and splits for native macOS apps

https://bonsplit.alasdairmonk.com/og-image.png
Create a tabbed interface with customizable tabs, icons, and dirty indicators, allowing for horizontal or vertical splitting of panes. Implement a tab controller protocol to manage tabs and panes, with optional callbacks for tab bar events.

Web-based image editor modeled after Deluxe Paint

https://raw.githubusercontent.com/steffest/DPaint-js/master/_img/dpaint-logo.png
DPaint.js is a web-based image editor for retro Amiga file formats with modern features. It's free, open-source, and runs in any browser with no dependencies or server data transfer.

Google confirms 'high-friction' sideloading flow is coming to Android

https://www.androidauthority.com/wp-content/uploads/2019/04/Install-from-Unknown-Sources-2.jpg
Google is adding a "high-friction" install process for sideloaded apps to educate users about risks. Advanced users can still install without verification, but with extra steps to understand the risks.

Introduction to PostgreSQL Indexes

https://dlt.github.io/blog/images/postgres_btree.png
PostgreSQL indexes are special database objects that speed up data access by allowing the database to read less data from the disk, but they also incur costs such as additional storage space and maintenance overhead. There are several types of indexes available in PostgreSQL, including B-Tree, Hash, BRIN, GIN, and GiST, each with its own strengths and weaknesses, and choosing the right type ...

White House alters arrest photo of ICE protester, says "the memes will continue"

https://cdn.arstechnica.net/wp-content/uploads/2026/01/nekima-levy-white-house-manipulated-image.jpg
The White House posted a manipulated photo of civil rights attorney Nekima Levy Armstrong, making her appear to be crying, after she was arrested for protesting at a church with alleged ties to ICE. Armstrong's lawyer calls the arrest a "farce" and the photo manipulation an "outrageous defamation."

ANN v3: 200ms p99 query latency over 100B vectors

https://turbopuffer.com/api/og?title=ANN%20v3%3A%20200ms%20p99%20query%20latency%20over%20100%20billion%20vectors
Turbopuffer's ANN v3 technology achieves 100 billion-vector scale at thousands of QPS with 200ms p99 latency. It uses hierarchical clustering, binary quantization, and distribution to maximize hardware utilization and minimize bottlenecks.

Show HN: Netfence – Like Envoy for eBPF Filters

https://opengraph.githubassets.com/69072ac91c64543d4cffcc0f83160d6625733e5e50166c412bfa81f509807453/danthegoodman1/netfence
Netfence is a daemon that injects eBPF filter programs into cgroups and network interfaces to block unknown traffic. It synchronizes allowlists/denylists with a central control plane via gRPC.

Show HN: TUI for managing XDG default applications

https://opengraph.githubassets.com/83da301afa97a927e7d33d7f5cfa96e0a16919521244742a43b5629b5c966dfb/mitjafelicijan/xdgctl
xdgctl is a TUI for managing XDG default applications. It allows setting and viewing file category defaults without using xdg-mime.

Wine-Staging 11.1 Adds Patches for Enabling Recent Photoshop Versions on Linux

https://www.phoronix.com/assets/categories/wine.webp
Wine-Staging 11.1 is available with 254 patches, including new work for Adobe Photoshop and VKD3D. It's available for testing on WineHQ.org.

BirdyChat becomes first European chat app that is interoperable with WhatsApp

https://framerusercontent.com/images/6Fu8DML1B3YUlANcBJ0dCVNXVI.png?width=132&height=132
BirdyChat now allows users to message WhatsApp users in Europe under the Digital Markets Act. This interoperability feature removes barriers to adoption and keeps work conversations organized.

Bridging the Gap Between PLECS and SPICE

https://erickschulz.dev/plecs_spice_article/Intro_PLECS_SPICE_comparison.png
Plexim has developed PLECS Spice, an extension that brings SPICE device-level simulation capabilities directly into PLECS. This allows engineers to simulate hybrid systems containing both standard PLECS and SPICE circuits within a single tool.

Jurassic Park - Tablet device on Nedry's desk? (2012)

https://www.therpf.com/forums/styles/default/mps_default/logo.png
A design mockup for the iRadio, later Envoy, was created by you at frogdesign for Motorola. It featured a hinge and folding mechanism with an internal antenna, later changed to an external one due to reception issues.

Nango (YC W23, Dev Infrastructure) Is Hiring Remotely

Nango Jobs

The Rebirth of Pennsylvania's Infamous Burning Town

I built a 2x faster lexer, then discovered I/O was the real bottleneck

https://modulovalue.com/assets/pub-dev-versions-page.png
The user built an ARM64 assembly lexer for Dart code that was 2x faster than the official scanner but found that I/O was the bottleneck due to syscall overhead. By compressing 104,000 Dart files into 1,351 tar.gz archives, the user achieved a 43x speedup in I/O and a 2.27x total speedup, highlighting the importance of reducing syscall overhead in modern storage systems.

A Lament for Aperture

https://ikennd.ac/pictures/aperture/aperture-icon.png
The author is a nostalgic Mac user who misses Apple's Aperture, a professional photo editing app discontinued in 2015. They compare Aperture's efficient design to modern apps like Photos, which require more clicks and navigation.

BU-808: How to Prolong Lithium-based Batteries (2023)

https://learning-book.transforms.svdcdn.com/production/content/lithium1.jpg?w=380&q=100&auto=format&fit=clip&dm=1761760638&s=0410003c1b1691cfd3d609486bf8c734
Lithium-ion batteries are improving in longevity and safety, but their capacity is increasing incrementally. They meet consumer device expectations but need further development for electric vehicles.

Sony Data Discman

https://huguesjohnson.com/random/sony-ebook/ebspring92_datadiscman.png
The user worked at an Electronics Boutique in 1992 and bought a Sony Data Discman Electronic Book Player DD-1EX for a low price. The device is a mini laptop-like reader with a QWERTY keyboard and lacks data saving capabilities, but has potential as a PDA.

Alarm overload is undermining safety at sea as crews face thousands of alerts

https://www.lr.org/globalassets/images/non-standard/ff55-9.jpg?width=324&height=432&quality=100
New research from Lloyd's Register found excessive shipboard alarms cause alarm fatigue, disrupting rest periods and eroding trust in safety systems. The study recommends adopting objective alarm performance assessment and human-centred design to reduce alarm loads and improve safety.

Show HN: LangGraph architecture that scales (hexagonal pattern, 110 tests)

https://opengraph.githubassets.com/0d9ec1bfa780ea48490524f5acc2bdba2c0987ca0859de9c27aa010d4f933eff/cleverhoods/sagecompass
SageCompass is a virtual consultant that evaluates AI ideas with numbers to determine their worth. It helps businesses decide if AI is necessary before investing time and money.

Adoption of EVs tied to real-world reductions in air pollution: study

https://keck.usc.edu/news/wp-content/uploads/sites/68/2026/01/iStock-2217025535-modified-e4b07314-9325-4adb-a1ff-02219bd88865-768x432.jpg
Researchers at the Keck School of Medicine of USC found a 1.1% drop in nitrogen dioxide levels for every 200 zero-emissions vehicles added in California neighborhoods. The study, using satellite data, confirms the environmental health benefits of zero-emissions vehicles in the real world.

Hands-On with Two Apple Network Server Prototype ROMs

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhMVaBYHPfG42ajSg-fJUO4Q2CUg9A4bjBzJaTcp4EPsMKScRrSAGFIsruOfx5yfiUK1L0LU9M100LMx7-aZzRhH5IUJjpyJH0DXVp43Ffz5RusjPhtSCUP5O4xHHLLtP0D8zAYqM4KZNncqmT-h_6XdDjLcQaHilQonlTBoxq1mVBrsaak6BBNEu-9KE/s320/PXL_20260116_185146129.jpg
The user is refurbishing an Apple Network Server 700, a large Unix server from the 1990s, and is testing its functionality with a pre-production ROM that allows it to boot Mac OS. The user has successfully booted the server with the ROM and is now ready to begin experimenting with the ROMs, including a prototype Mac OS ROM that fully supports all internal devices in Mac OS.

Deutsche Telekom is throttling the internet

https://netzbremse.de/img/ew/ew_logo_rgb-l_hu12404189744775767714.png
Hier ist eine Zusammenfassung in 2 konkreten Sätzen:

Challenges and Research Directions for Large Language Model Inference Hardware

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Large Language Model inference is challenging due to memory and interconnect issues. Researchers propose four architecture opportunities to address these challenges: high bandwidth memory, processing-near-memory, 3D memory-logic stacking, and low-latency interconnect.

150k lines of vibe coded Elixir: The Good, the Bad and the Ugly

https://getboothiq.com/images/open_graph_image.png
Using Elixir with AI has greatly increased productivity, but it requires a consistent codebase architecture and strict adherence to good Elixir practices to avoid messy code. The AI, Claude, excels at writing code but struggles with decisions and debugging, particularly with concurrent test failures and OTP issues, requiring human intervention to correct its mistakes.

Back to Bellevue

https://theamericanscholar.org/wp-content/uploads/2025/11/angier_full-844x1024.jpg
Through the kitchen window, I could see my husband, Rick, in the back yard, his expression grim, his phone pressed against his ear. He was walking in tight circles as he talked, the way he does when he’s stressed. I opened the back door and heard a smattering of ominous, dreary words: Stroke. Fall. Hospital. Rick’s parents were dead. My father was dead. Our aunts and uncles, nearly all dead. ...