Show HN Daily Selection (2025-04-02)
- Offline SOS signaling+recovery app for disasters/wars
- Zig Topological Sort Library for Parallel Processing
- Qwen-2.5-32B is now the best open source OCR model
- Nue – Apps lighter than a React button
- Textcase: A Python Library for Text Case Conversion
- Make SVGs interactive in React with 1 line
- Duolingo-style exercises but with real-world content like the news
- Terminal dashboard that throttles my PC during peak electricity rates
- Calculation Hub: Every Calculation Tool You'll Ever Need
- I built a CLI for one-command fullstack TypeScript projects
- Monkeys.zip (Infinite Monkeys Writing Shakespeare)
- I got burned by bad NYC rentals, so I built an extension for complaints
- Generate Anki Decks from YouTube Videos to Anki Converter
- GitHub Actions OIDC for Python That Just Works(TM)
- CSS Clicker – a pure-CSS idle game where you build your own website
- Kai Scheduler – K8s scheduler optimizing GPU for AI
- Omnom – Bookmarking with Website Snapshots
- Puremd-mcp – MCP server for reliably accessing web content
- AI Call Answering Service for Home Service Businesses
- Emissary – Rust implementation of the I2P protocol stack
- Wasp – the first full-stack framework powered by an LLM
- Remote Storage MCP Server for FTP, FTS, SFTP, S3, SMB, NFS, Git
Offline SOS signaling+recovery app for disasters/wars [Health]
27 points, 10 comments
Offline SOS signaling and recovery app designed for disaster or war scenarios to help locate people trapped under rubble.
- Built to assist common people in emergencies when professional tools are unavailable
- Specifically developed in response to crises like the situation in Myanmar
- Uses BLE (Bluetooth Low Energy) for signaling, though effectiveness under rubble may be limited
- Tested in controlled environments but open to feedback and improvements
- Encourages community contributions for further development
Discussion Link, Original Link
Zig Topological Sort Library for Parallel Processing [Developer Tools]
75 points, 25 comments
A Zig library for topological sorting with parallel processing support.
- Builds dependency graphs from dependency data
- Performs topological sort on dependency graphs
- Generates dependence-free subsets for parallel processing
- Detects and reports cycles in the graph
Discussion Link, Original Link
Qwen-2.5-32B is now the best open source OCR model [Developer Tools]
122 points, 33 comments
Qwen-2.5-32B is now the top open-source OCR model, outperforming others in accuracy benchmarks.
- Achieves ~75% accuracy, matching GPT-4o's performance
- Surpasses specialized OCR models like mistral-ocr (72.2%)
- Open-source benchmark and dataset available for reproducibility
- Qwen-2.5-32B and 72B show nearly identical performance
- Gemma-3 (27B) underperforms at 42.9% despite Gemini 2.0 lineage
Discussion Link, Original Link
Nue – Apps lighter than a React button [Developer Tools]
669 points, 482 comments
Nue is a lightweight alternative to React for building applications.
- Lighter than a React button
- Designed for building apps
- Focuses on minimalism and efficiency
Discussion Link, Original Link
Textcase: A Python Library for Text Case Conversion [Developer Tools]
5 points, 0 comments
A Python library for converting text between different case styles.
- Supports various case conversions (e.g., camelCase, snake_case, kebab-case)
- Simple and lightweight Python library
- Easy integration into existing projects
Discussion Link, Original Link
Make SVGs interactive in React with 1 line [Developer Tools]
30 points, 15 comments
A React utility for adding playful, interactive SVGs with minimal code.
- Supports mouse-tracking, scroll, hover, and other interactions
- Lightweight and intuitive for React developers
- Inspired by p5.js but designed for React ecosystems
- Open-source, encouraging community contributions
- Documentation and examples available on the website
Discussion Link, Original Link
Duolingo-style exercises but with real-world content like the news [Education]
420 points, 160 comments
Language learning app with Duolingo-style exercises using real-world video content.
- Uses high-quality transcripts from videos for exercises
- Filters content for high-quality and plausible segments
- Leverages LLM for reliable exercise selection
- Focuses on listening comprehension with real-world context
Discussion Link, Original Link
Terminal dashboard that throttles my PC during peak electricity rates [Productivity]
79 points, 54 comments
WattWise is a CLI tool that monitors and adjusts workstation power usage during peak electricity rates.
- Monitors power draw using smart plugs
- Automatically throttles CPU and GPUs during expensive electricity periods
- Built with Python and uses PID controllers for smooth transitions
- Compatible with TP-Link Kasa plugs and Home Assistant
Discussion Link, Original Link
Calculation Hub: Every Calculation Tool You'll Ever Need [Productivity]
9 points, 0 comments
Calculation Hub provides a comprehensive collection of calculators in a clean, simple interface.
- Growing list of calculators
- Clean, simple design
Discussion Link, Original Link
I built a CLI for one-command fullstack TypeScript projects [Developer Tools]
3 points, 0 comments
A CLI tool for quickly setting up fullstack TypeScript projects with modern libraries and frameworks.
- Scaffolds TypeScript projects using Turborepo, React, and tRPC
- Includes TanStack Router/Query, Tailwind CSS
- Supports Hono/Elysia backends
- Integrates Drizzle/Prisma ORMs
- Simple setup via
npx create-better-t-stack@latest
Discussion Link, Original Link
Monkeys.zip (Infinite Monkeys Writing Shakespeare) [Entertainment]
6 points, 2 comments
A simulator of the Infinite Monkey Theorem where users can observe or participate with their own monkey typing random text to match Shakespeare's works.
- Simulates monkeys randomly typing to test the Infinite Monkey Theorem
- Users can browse a grid of active monkeys and their typed words
- Free participation with personalized monkeys
- Rewards and customization for typing special words
- Fresh simulation start with recent wipe for equal participation
Discussion Link, Original Link
I got burned by bad NYC rentals, so I built an extension for complaints [Consumer Tech]
4 points, 0 comments
Realest is a browser extension that overlays NYC 311 housing complaint data on StreetEasy listings to help renters avoid problematic apartments.
- Displays housing complaints (leaks, mice, no heat) directly on rental listings
- Pulls data from NYC’s open 311 complaint database
- Designed to uncover hidden issues not mentioned in listings
- Works as a browser extension for seamless integration with StreetEasy
Discussion Link, Original Link
Generate Anki Decks from YouTube Videos to Anki Converter [Education]
4 points, 2 comments
A tool that converts YouTube videos into Anki decks for easier learning.
- Automatically generates Anki flashcards from YouTube content
- Designed to save time and effort in creating study materials
- Currently supports AI-related content, with potential for broader use
- Open to community feedback and improvements
Discussion Link, Original Link
GitHub Actions OIDC for Python That Just Works(TM) [Developer Tools]
6 points, 0 comments
GitHub Actions OIDC for Python simplifies authentication setup with minimal configuration.
- Easy integration with GitHub Actions using a simple YAML snippet
- Eliminates manual token management by automating OIDC setup
- Designed to be developer-friendly with minimal setup hassle
Discussion Link, Original Link
CSS Clicker – a pure-CSS idle game where you build your own website [Entertainment]
6 points, 1 comments
Pure-CSS idle game where you build your own website.
- No JavaScript required
- Idle gameplay mechanics
- Customizable website building
- Pure CSS implementation
Discussion Link, Original Link
Kai Scheduler – K8s scheduler optimizing GPU for AI [Developer Tools]
3 points, 0 comments
Kai Scheduler is a Kubernetes scheduler optimized for GPU utilization in AI workloads.
- Optimizes GPU allocation for AI tasks
- Works within Kubernetes environments
- Focuses on efficient GPU resource management
Discussion Link, Original Link
Omnom – Bookmarking with Website Snapshots [Productivity]
7 points, 0 comments
Bookmarking tool with website snapshots.
- Saves bookmarks with snapshots of websites
- Preserves webpage appearance for future reference
Discussion Link, Original Link
Puremd-mcp – MCP server for reliably accessing web content [Developer Tools]
3 points, 2 comments
Puremd-mcp is an MCP server designed for reliably accessing web content.
- Provides reliable access to web content
- Uses MCP server protocol
Discussion Link, Original Link
AI Call Answering Service for Home Service Businesses [Business]
4 points, 0 comments
AI Call Answering Service for Home Service Businesses
- AI-powered call answering
- Designed for home service businesses
Discussion Link, Original Link
Emissary – Rust implementation of the I2P protocol stack [Developer Tools]
3 points, 0 comments
Rust implementation of the I2P protocol stack
- Written in Rust
- Implements the I2P protocol stack
Discussion Link, Original Link
Wasp – the first full-stack framework powered by an LLM [Developer Tools]
15 points, 0 comments
Wasp is the first full-stack framework powered by an LLM.
- Full-stack development framework
- Powered by an LLM for enhanced capabilities
Discussion Link, Original Link
Remote Storage MCP Server for FTP, FTS, SFTP, S3, SMB, NFS, Git [Developer Tools]
5 points, 0 comments
Remote Storage MCP Server supporting multiple protocols including FTP, SFTP, S3, SMB, NFS, and Git.
- Supports multiple storage protocols (FTP, SFTP, S3, SMB, NFS, Git)
- Acts as a centralized remote storage management solution
- Enables seamless integration across different storage systems