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The article discusses the Companion, an open-source hardware and software project that aims to create a portable, customizable device for personal computing and digital lifestyles. The project focuses on providing an alternative to mainstream consumer electronics while emphasizing user privacy, sustainability, and community involvement.

The article discusses the ongoing debate around taxing the ultra-wealthy, particularly focusing on Elon Musk and his wealth growth in California. It examines the challenges and complexities of implementing effective wealth taxes to address wealth inequality.

Hi HN!

I work on an analytical database engine, and I spend a lot of time trying to understand the structure of Apache Parquet files (row groups, column chunks, data pages, encodings, etc.).

I feel like existing tools for this job such as parquet-tools or pyarrow are cumbersome to use and for anything beyond the basics you end up writing custom code. Datanomy contains some more info, but still requires installing a CLI. Some databases like DuckDB also have a feature to query the metadata, but that means writing SQL for every little thing you want to check, and the output is still text.

I wanted something I could just drop a file into, and immediately see the structure visualized — so I built Parquetastic, a browser-based visual Parquet metadata inspector tool.

What it does:

- Visualizes the full Parquet file structure: row groups, column chunks, pages (if your file has a page index), encodings, compression, statistics

- Shows key specs at a glance without writing any code or queries (e.g., footer size, page index size)

- Runs entirely in the browser — the data never leaves your device

- No download, no installation, no signup

Live demo: https://parquetastic.dev

GitHub: https://github.com/FlorianPfisterer/parquetastic

I'd love your feedback, especially from anyone who regularly works with Parquet files!

Disclaimer: This project was fully built in my free time and has nothing to do with my employer. And before you ask: Yes, this was mostly vibe-coded (or rather "agentically engineered"). Without these tools, I wouldn't have had the time to build it!

A friend who's a corporate photographer came to me with an interesting problem: aligning multiple portrait photos for team pages, yearbooks, directories, so that faces are consistently positioned.

Fundamentally, when you take dozens of photos in a day, they are likely to be all slightly different in terms of crop.

As I had done some work with facial feature recognition, my friend asked if the same tech could be used for his problem... and here's why [FaceCrop](http://facecrop.puntofisso.net/) came to be :-)

How does it work: * drop in your photos * FaceCrop detects faces using face-api.js or tracking.js * FaceCrop suggests crops * fine-tune the crops individually or globally * export the crops in a .zip file.

To note, everything runs client-side on the browser: no uploads, no server-side, no accounts. It was mostly developed using some code I had from a previous project and some Claude Code.

Would welcome constructive feedback most importantly on the crop adjustment UI/UX, but also on the detection accuracy, suggested crop shape, etc.

The article discusses the rise of the iPad as a capable and versatile device, detailing how it has evolved to challenge traditional laptops and become a mainstream computing platform for many users.

The article provides a guide on how to use the Claude AI language model to generate and manage digital receipts, including instructions for creating, organizing, and retrieving receipts using the Claude API.

CodeSnip is a cross‑platform snippet manager and local code runner built with Avalonia UI. It includes local script execution (Shell, C#, F#, Python, PHP, Lua, Ruby, Node.js, PowerShell, Java/JShell), Compiler Explorer integration, and an advanced editor for editing XSHD highlight definitions.

The article discusses Nixmate, an open-source tool that simplifies the management of Nix-based systems. It provides a user-friendly interface and streamlines common Nix tasks, making it easier for developers to work with Nix-based environments.

The article explores the impact of the Ukraine war on the country's renewable energy sector. It examines how the conflict has disrupted Ukraine's renewable energy infrastructure, yet also created opportunities for the sector to grow and play a crucial role in the nation's energy future.

This article discusses the Ruby-Prism-Skill, a tool that allows developers to create interactive command-line interfaces using Ruby and the Prism library. It highlights the tool's features, such as creating prompts, handling user input, and integrating with external data sources.

Awesome OpenCode is a curated list of open-source projects, tools, and resources for developers, covering a wide range of topics such as programming languages, frameworks, libraries, and community-driven initiatives.

The article explores the current scientific understanding of what existed before the Big Bang, including the concept of a universe that existed prior to the Big Bang, and the various theories and speculation around the origins of our universe.

Rememory is a novel concept that aims to provide a backup solution for your memory, allowing you to store and retrieve important experiences and information in case of memory loss or impairment. The article explores the potential applications and implications of this technology.

Hi HN,

SOC 2 audit prep costs 20K/year, so I wrote a Agent skill to automate most of it. It goes beyond policy generation from templates by leveraging the abilities to access your codebase:

- asks contextual questions about your company and specifics about each policy - scans your source code - uses aws, azure-cli, gcp to check your cloud infra - writes shell scripts to fetch configs from your SaaS: Okta, Datadog, PagerDuty, Jira etc.

As a result you get:

- A set of policy documentation tailored to your company - All evidences are automatically versioned with your repo - Automatic evidence collection through Github Workflow Actions - Leverage Claude Code to add new integration scripts easily - No secrets leave your environment

This is targeted at small companies and startups who’d rather spend an afternoon with an agent than $20K/year on a compliance platform. It doesn’t replace the auditor and various aspects of compliance platforms, but handles a good trunk of the grunt work for free.

Some design choices I made: Each evidence collection script is a readable shell you can run locally: make it easy to unit test each script rather than relying on runtime agents. Organize frameworks & integrations so it’s easy to add new ones. Progressive Disclosure: only load context when needed

Repo: https://github.com/screenata/compliance-automation

Demo Video: https://www.youtube.com/shorts/EevpE6bKwhA

I'd love your feedback on:

If you’ve been through SOC 2, what controls were hardest to evidence?

PRs with new frameworks, evidence collection scripts with your SaaS tools

What would you like to see next

Hi HN,

I built Pingui Alert because I kept overengineering alerting for small projects. I didn’t need dashboards, charts or complex configs — I just needed a Telegram message when something important broke.

Pingui Alert is: - One API call → Telegram alert - Open source & self-hostable - Queue-based (Redis) - No log storage, no PII

It’s meant for things like: payment failures, disk space alerts, failed backups, security events.

There’s a public bot with a small daily limit, or you can self-host it.

GitHub: https://github.com/juanvidev1/pingui-alert Live: https://pingui-alert.dev

I’d really appreciate technical feedback — especially what feels unnecessary or what you’d simplify even more.

picoclaw is an embedded Clawmaster system for Raspberry Pi Pico, providing a low-cost, power-efficient solution for automating various tasks and controlling small-scale devices.

The article celebrates Enphase's 20th anniversary, reflecting on the company's journey from a small startup to a leading provider of solar energy solutions. It highlights Enphase's role in shaping the solar industry and its commitment to innovation, sustainability, and customer-centric approach.

MemOS OpenClaw Plugin is now live! KEY FEATURES: Personal & memory-driven — recalls past interactions from MemOS Cloud and adapts to your workflow. Secure & local-first — runs on your machine, memories in the Cloud under your control. Token-smart — offloads memory to MemOS, reducing LLM calls and saving costs vs plain OpenClaw. Plug-and-play — install, enable, restart, and your agent is ready. No complex setup.

GitScrum MCP Server brings Model Context Protocol support to GitScrum, enabling Claude, GitHub Copilot, Cursor, and other AI assistants to manage your tasks, sprints, time tracking, user stories, epics, and more.

Built with TypeScript. Currently has 1 star – would love your feedback and contributions!

Stripe's Minions Stripes One-Shot End-to-End Coding Agents article discusses the company's development of an automated system to handle customer support queries, using machine learning and natural language processing to efficiently address user inquiries.

The article discusses a unique marble sculpture that cost $170 to create, highlighting the artist's process and the unexpected challenges they faced during the project.

Microsoft's 'Skills' project aims to create an open, inclusive platform to connect people with skills, jobs, and learning opportunities. It focuses on developing technical and employability skills through partnerships, AI-powered recommendations, and open-source tools.

The article discusses the Vigil Network Architecture, a decentralized network designed to provide secure and resilient communication infrastructure. It outlines the network's key features, including its distributed nature, privacy-preserving protocols, and ability to withstand censorship and service disruptions.