Show HN Daily Selection (2025-04-06)
- I built a word game. My mom thinks it's great. What do you think?
- iPhone 2005 weird "Blob Keyboard" simulator
- OCR pipeline for ML training (tables, diagrams, math, multilingual)
- I Made a No-Code Excel to HTML Table Maker
- Windows XP Themed Personal Site Built with React
- Corral – A Visual Logic Puzzle About Enclosing Numbers
- Composer Web – cursor extension for vibe coders
- A MCP plugin that use Rust, compiled to WASM to securely run Python
- BookmarkFS – A pseudo-filesystem for managing web browser bookmarks
- YesRTOS – A lightweight RTOS from scratch in modern C++
- TextZen – Lightweight Obsidian Alternative for macOS
- Active MCP - A Rails engine that provides MCP capabilities to Rails app
I built a word game. My mom thinks it's great. What do you think? [Entertainment]
256 points, 147 comments
A word game created by a developer, praised by their mom.
- Simple and engaging word game
- Personal project with family approval
- Open for community feedback
Discussion Link, Original Link
iPhone 2005 weird "Blob Keyboard" simulator [Consumer Tech]
83 points, 28 comments
A web simulator of the original iPhone "Blob Keyboard" prototype from 2005, designed to showcase early touchscreen keyboard development.
- Simulates Ken Kocienda's first functional touchscreen keyboard
- Tap for middle letters, swipe for side letters
- Authentic reconstruction based on historical images and direct feedback from Kocienda
- No QWERTY, backspace, cursor movement, or uppercase/numbers
- Best experienced on touchscreens to replicate original hardware interaction
- Demonstrates a pivotal moment in iPhone UX design history
OCR pipeline for ML training (tables, diagrams, math, multilingual) [Developer Tools]
147 points, 23 comments
An OCR pipeline optimized for ML training, handling complex academic materials like tables, diagrams, math, and multilingual text.
- Multi-stage OCR combining DocLayout-YOLO, Google Vision, MathPix, and Gemini Pro Vision
- Extracts and understands diagrams, tables, LaTeX-style math, and multilingual text (Japanese/Korean/English)
- Optimized for ML training pipelines, including dataset generation and preprocessing for RAG or fine-tuning tasks
- Includes sample outputs from real exams (EJU Biology, UTokyo Math, etc.)
- Outputs clean, structured formats like JSON and Markdown
Discussion Link, Original Link
I Made a No-Code Excel to HTML Table Maker [Productivity]
4 points, 0 comments
A no-code tool to convert Excel spreadsheets into responsive, filterable HTML tables.
- No coding required
- Supports large spreadsheets (thousands of rows)
- Built-in advanced data filtering & sorting
- Customizable layout and styling
- Instant embed code for any website
- Free for low-traffic sites
Discussion Link, Original Link
Windows XP Themed Personal Site Built with React [Design]
3 points, 0 comments
A personal website styled like Windows XP, built with React for nostalgia and practice.
- Mimics Windows XP UI for a nostalgic experience
- Built with React to improve development skills
- Successfully fooled users into thinking it was real Windows XP
- No mobile version currently available
- Open-source code available on GitHub
Discussion Link, Original Link
Corral – A Visual Logic Puzzle About Enclosing Numbers [Entertainment]
25 points, 15 comments
A visual logic puzzle game where players enclose numbers on a grid using a continuous loop based on visibility rules.
- Played on a rectangular grid with numbered cells
- Goal is to mark cells inside a continuous loop enclosing all numbers
- Numbers indicate visible cells in four directions until hitting the loop boundary
- Pure logic-based deduction with no guessing required
- Three difficulty levels available
- Every puzzle has a unique solution
Discussion Link, Original Link
Composer Web – cursor extension for vibe coders [Developer Tools]
3 points, 1 comments
A one-click extension for "vibe coders" that sends logs, network requests, and screenshots directly to AI coding assistants like Cursor.
- Seamlessly integrates logs, requests, and webpage screenshots into AI chat in under a second
- Supports iOS simulator screenshots for mobile app development
- Open-source with plans to expand to AWS Cloud Console logs and other IDEs
- Designed to streamline AI-assisted coding by reducing manual debugging effort
Discussion Link, Original Link
A MCP plugin that use Rust, compiled to WASM to securely run Python [Developer Tools]
3 points, 0 comments
A Rust-based MCP plugin compiled to WASM for secure Python execution.
- Uses Rust compiled to WebAssembly
- Enables secure execution of Python code
- Plugin system published to OCI
- Pet project demonstrating WASM integration
Discussion Link, Original Link
BookmarkFS – A pseudo-filesystem for managing web browser bookmarks [Productivity]
4 points, 0 comments
BookmarkFS is a pseudo-filesystem that allows managing browser bookmarks via the local filesystem using standard file tools.
- Mounts browser bookmarks (Firefox, Chromium) as a filesystem for easy access
- Supports read-write operations for managing bookmarks
- Enables use of standard file management tools (e.g.,
fdupes,find,cp) - Works with Firefox (
places.sqlite) and Chromium (Bookmarks) profiles - Currently in alpha stage, so caution and backups are advised
Discussion Link, Original Link
YesRTOS – A lightweight RTOS from scratch in modern C++ [Developer Tools]
4 points, 0 comments
YesRTOS is a lightweight real-time operating system for ARM-Cortex M, written in modern C++.
- Lightweight RTOS
- Designed for ARM-Cortex M
- Written in modern C++
Discussion Link, Original Link
TextZen – Lightweight Obsidian Alternative for macOS [Productivity]
3 points, 0 comments
Lightweight Obsidian alternative for macOS.
- Designed for macOS
- Minimalist and lightweight
- Alternative to Obsidian
Discussion Link, Original Link
Active MCP - A Rails engine that provides MCP capabilities to Rails app [Developer Tools]
3 points, 6 comments
Active MCP is a Rails engine that adds MCP (Management, Control, and Planning) capabilities to Rails applications.
- Integrates MCP functionalities into Rails apps
- Designed as a Rails engine for easy implementation
- Focuses on management, control, and planning features