Show HN Daily Selection (2025-05-25)

• Rotary Phone Dial Linux Kernel Driver
• F2 – Cross-Platform CLI Batch Renaming Tool
• 1 min workouts for people who sit all day
• SuperUtilsPlus – A Modern Alternative to Lodash
• DeepShot – NBA game predictor with 71% accuracy using ML and stats
• HNRelevant – Add a "related" section to Hacker News
• Made a free tool for affiliate marketers to fix in-app browser issues
• Lnk – Git-native dotfiles manager
• I spent 8 months trying to make LLMs Hack
• SweepIQ – A simple AI tool to help you learn more, faster
• Web Apps for Python Devs with Auto-Generated UI
• WPNLWeb – open-source WordPress plugin using Microsoft's NLWeb Protocol
• A microsite with 100 ways to take a break (tiny, fast, no ads)
• Zasper – A High Performance IDE for Jupyter Notebooks

Rotary Phone Dial Linux Kernel Driver [Developer Tools]

265 points, 35 comments

A Linux kernel driver that converts a rotary phone dial into an evdev input device.

• Enables slow, tactile dialing instead of numpad input
• Modernizes vintage rotary phones for digital use
• Includes a VM-based dev/test environment for educational purposes
• Serves as a beginner-friendly embedded Linux driver example
• Originally an unfinished project, now published for broader use

Discussion Link, Original Link

F2 – Cross-Platform CLI Batch Renaming Tool [Developer Tools]

91 points, 16 comments

Cross-platform CLI tool for fast and flexible bulk file renaming.

• Works on Linux, macOS, and Windows
• Default dry-run mode for safety
• Supports undo functionality
• Offers built-in variables and Exiftool integration for advanced renaming

Discussion Link, Original Link

1 min workouts for people who sit all day [Health]

76 points, 27 comments

An iOS app offering 1-minute workouts designed for people who sit all day, with no ads or fees.

• Generates a list of quick exercises to complete daily, maintaining streaks
• Algorithm balances exercises to target different muscle groups
• Includes alternative exercises for flexibility
• Features professional video guides and animations for proper posture
• Free with no ads, created by a developer inspired by "snack exercises" research

Discussion Link, Original Link

SuperUtilsPlus – A Modern Alternative to Lodash [Developer Tools]

76 points, 54 comments

SuperUtilsPlus is a modern, TypeScript-first utility library designed to address Lodash's shortcomings with better type inference, sensible defaults, and optimized bundling.

• TypeScript-first approach with accurate type inference
• Sensible defaults (e.g., isObject([]) returns false, isNumber(NaN) returns false)
• Built for ES2020+ with proper ESM support
• Fully tree-shakable with modular imports
• Improved utility functions like compactNil(), differenceDeep(), and better debounce()
• Includes modern utilities like randomUUID() and randomString()

Discussion Link, Original Link

DeepShot – NBA game predictor with 71% accuracy using ML and stats [Entertainment]

5 points, 0 comments

DeepShot is an open-source NBA game predictor using machine learning and historical stats with 71% accuracy.

• Uses real NBA data from Basketball Reference
• Implements Exponentially Weighted Moving Averages (EWMA) for momentum tracking
• Features an interactive NiceGUI interface for team comparisons and predictions
• Built on a full Python stack with an MIT license

Discussion Link, Original Link

HNRelevant – Add a "related" section to Hacker News [Developer Tools]

109 points, 26 comments

HNRelevant adds a "related" section to Hacker News to surface relevant discussions.

• Improved accuracy by using comments to gauge discussion topics
• Available as browser extensions for Chrome, Firefox, and Edge
• Supports narrow screens and mobile devices
• Includes preference controls for customization

Discussion Link, Original Link

Made a free tool for affiliate marketers to fix in-app browser issues [E-commerce]

3 points, 0 comments

A free tool to redirect affiliate links from in-app browsers to real browsers, preserving tracking and commissions.

• Fixes tracking and deep link issues caused by in-app browsers
• No signup required for basic link conversion
• Free to use with optional link-in-bio page feature
• Built with Next.js and MongoDB
• No hidden costs or complex setup

Discussion Link, Original Link

Lnk – Git-native dotfiles manager [Developer Tools]

69 points, 47 comments

Git-native dotfiles manager that simplifies symlink management with minimal setup.

• Moves dotfiles to ~/.config/lnk and creates symlinks
• Single binary with no additional config files
• Designed for simplicity, avoiding complexity of tools like chezmoi
• Uses standard Git workflows for version control

Discussion Link, Original Link

I spent 8 months trying to make LLMs Hack [Developer Tools]

4 points, 2 comments

An AI-powered security testing tool that autonomously hacks web applications to find vulnerabilities using custom-built agents.

• Custom LLM orchestration framework with 29 specialized agents
• Runs in isolated Kali Linux environments on AWS Fargate
• Full internet access for research via Tavily
• Generates detailed vulnerability reports (up to 30+ pages)
• No reliance on Auto-Gen, Langchain, or Crew AI

Discussion Link

SweepIQ – A simple AI tool to help you learn more, faster [Education]

36 points, 17 comments

AI tool designed to enhance learning efficiency.

• Simple interface for quick adoption
• Uses AI to accelerate learning process
• Focuses on helping users learn more in less time

Discussion Link, Original Link

Web Apps for Python Devs with Auto-Generated UI [Developer Tools]

36 points, 14 comments

Davia is a tool for Python developers to turn functions into web apps with auto-generated UIs without writing frontend code.

• Converts Python functions into web apps using decorators
• Generates UI via prompts and deploys with FastAPI
• Designed for AI tools, integrates with LangGraph
• Avoids frontend development (e.g., React)
• Early-stage, open for feedback

Discussion Link, Original Link

WPNLWeb – open-source WordPress plugin using Microsoft's NLWeb Protocol [Developer Tools]

3 points, 0 comments

Open-source WordPress plugin integrating Microsoft's NLWeb Protocol.

• Uses Microsoft's NLWeb Protocol
• Open-source and free to use
• Designed for WordPress integration

Discussion Link, Original Link

A microsite with 100 ways to take a break (tiny, fast, no ads) [Life Assistant]

4 points, 1 comments

A minimalist microsite listing 100 simple ways to take breaks, designed to combat burnout and screen fatigue.

• Lightweight and fast-loading
• No ads, tracking, or login required
• Mobile-friendly design
• Features straightforward break ideas like "go outside" or "breathe"
• Originated as a personal anti-burnout project

Discussion Link, Original Link

Zasper – A High Performance IDE for Jupyter Notebooks [Developer Tools]

6 points, 0 comments

High-performance IDE designed for Jupyter Notebooks.

• Optimized for speed and efficiency
• Tailored specifically for Jupyter Notebook workflows
• Enhances productivity with advanced features

Discussion Link, Original Link