Show HN Daily Selection (2025-07-07)
- I wrote a "web OS" based on the Apple Lisa's UI, with 1-bit graphics
- Simple wrapper for Chrome's built-in local LLM (Gemini Nano)
- Pixel Art Generator Using Genetic Algorithm
- I made a crowd counting game
- Guess the Sharpe
- Comically – TUI manga and comic optimizer for e-readers
- Chat Capsule – Convert ChatGPT Chats to Markdown (For Notion, etc.)
- Virby, a vfkit-based Linux builder for Nix-Darwin
- Spots – Map of good places to work remotely for the day
- YouTube Shorts Blocker Chrome Extension
- I Built a Minimal AI Chat app with Local Storage and Advanced Research
I wrote a "web OS" based on the Apple Lisa's UI, with 1-bit graphics [Consumer Tech]
232 points, 76 comments
A web-based OS mimicking the Apple Lisa's UI with 1-bit graphics, built entirely in vanilla JS.
- Complete recreation of the Lisa UI in JavaScript, rendering to a single canvas
- Custom typesetting system with dynamically generated glyphs
- Designed for cross-browser consistency using vanilla JS and standard web APIs
- Not optimized for mobile, but supports PWA installation
- Currently in alpha with planned future features and apps
Discussion Link, Original Link
Simple wrapper for Chrome's built-in local LLM (Gemini Nano) [Developer Tools]
19 points, 1 comments
A TypeScript wrapper for Chrome's built-in Gemini Nano LLM to simplify its Prompt API usage.
- Stateless
prompt()method inspired by Anthropic's SDK - Built-in error handling with Result-based
.Safe.*variants - Token usage checks
- Simple initialization with user-triggered download helper
- Minimal design for hacking and prototyping
Discussion Link, Original Link
Pixel Art Generator Using Genetic Algorithm [Image]
13 points, 12 comments
Pixel Art Generator using genetic algorithms to evolve random images into a target image.
- Uses genetic algorithms for image generation
- Starts with random images and evolves them over generations
- Outputs an animated GIF showing the evolution process
Discussion Link, Original Link
I made a crowd counting game [Entertainment]
4 points, 2 comments
A crowd counting game where players guess the number of people in daily images.
- Players make accurate guesses about the number of people in images
- 5 new images are provided daily
- Feedback and suggestions are welcomed
Discussion Link, Original Link
Guess the Sharpe [Finance]
3 points, 0 comments
Guess the Sharpe, a tool for estimating investment performance metrics.
- Inspired by a request from gappy on X
- Focuses on Sharpe ratio estimation
- Simple and interactive interface
Discussion Link, Original Link
Comically – TUI manga and comic optimizer for e-readers [Consumer Tech]
3 points, 3 comments
Comically optimizes manga and comics for e-readers via a TUI interface.
- TUI (Terminal User Interface) for manga/comic optimization
- Designed specifically for e-reader compatibility
- Focuses on improving readability and display quality
Discussion Link, Original Link
Chat Capsule – Convert ChatGPT Chats to Markdown (For Notion, etc.) [Productivity]
3 points, 0 comments
Convert ChatGPT conversations to Markdown for easy import into Notion or other platforms.
- Client-side parsing ensures privacy (no data leaves your machine)
- Supports drag-and-drop of ChatGPT export files (ZIP or JSON)
- Option to download individual threads or all as a ZIP
- Free for first 100 users with promo code SUMMERDAY100
Discussion Link, Original Link
Virby, a vfkit-based Linux builder for Nix-Darwin [Developer Tools]
3 points, 0 comments
Virby is a Nix-Darwin module that sets up a lightweight Linux VM for remote Nix builds on macOS.
- Configures a Linux VM for Nix builds
- Lightweight and efficient
- Enables Linux package building on macOS
- Uses vfkit for virtualization
Discussion Link, Original Link
Spots – Map of good places to work remotely for the day [Productivity]
7 points, 5 comments
A map of quality remote work locations, focusing on practical spots beyond typical coworking spaces or cafes.
- Focuses on genuinely good places for remote work
- Simple and fast interface
- Curated, high-quality data similar to Hacker News
- Open to user feedback for improvements
Discussion Link, Original Link
YouTube Shorts Blocker Chrome Extension [Productivity]
3 points, 1 comments
Blocks YouTube Shorts in Chrome.
- Prevents YouTube Shorts from appearing
- Chrome extension for easy installation
- Helps avoid distractions while browsing YouTube
Discussion Link, Original Link
I Built a Minimal AI Chat app with Local Storage and Advanced Research [ChatBots]
3 points, 3 comments
Minimal AI chat app with local storage and advanced research capabilities.
- Local storage for data persistence
- Advanced research integration
- Minimalist design