Show HN Daily Selection (2025-04-25)
- Lemon Slice Live – Have a video call with a transformer model
- I reverse engineered top websites to build an animated UI library
- I Added Translation to My RSS Reader Project
- Zev – Remember (or discover) terminal commands
- Infat – Declaritive application assocation manager for macOS
- My from-scratch OS kernel that runs DOOM
- Colanode, open-source and local-first Slack and Notion alternative
- I made my own TRMNL e-ink device
- I hate cubes, so I vibe coded a game to destroy them
- We made a blazing-fast, open-source GitHub front end
- Interactive map of Palo Alto police record log PDFs
- TabTab – A keyboard-first browser workspace for tab hoarders
- GitNote- Online MD note editor that syncs to GitHub
- IdeaKiln – A platform to validate your startup ideas before building
- I made an AI copilot for Maps that answers open-ended map questions
- Chat with AI copies of all HN users, like sama, dang, and even yourself
- I built a visual topic explorer for SEOs and content creators
- Safari extension that adds Chrome-style bookmark star to the toolbar
- Type Japanese an app to practice typing Japanese keyboard
- MCP MCP – an MCP server to list MCP servers
- ParseLM – Reliably Structure LLM Outputs for Data and Control Flow
- ProfileMagic – $10 AI LinkedIn headshots (20 photos, look natural)
Lemon Slice Live – Have a video call with a transformer model [Video]
99 points, 51 comments
Lemon Slice Live enables real-time video calls with AI-generated avatars from a single uploaded image.
- Custom diffusion transformer (DiT) model achieves 25fps video streaming at 256px resolution
- No pre-training or rigging required—works with any image style (photorealistic, cartoon, etc.)
- Solves infinite video generation with temporal consistency preservation
- End-to-end latency of 3-6 seconds using parallel processing pipelines
- Future improvements include whole-body motion, reduced latency, and interactive listening
I reverse engineered top websites to build an animated UI library [Design]
56 points, 22 comments
A React and Framer Motion library of reusable animated components reverse-engineered from top websites.
- Built by reverse-engineering components from popular sites like Clerk
- Offers reusable, animated UI components
- Uses React and Framer Motion for implementation
- Open to community feedback for improvements
Discussion Link, Original Link
I Added Translation to My RSS Reader Project [Productivity]
12 points, 1 comments
One-sentence summary: A developer has added translation functionality to their RSS reader project.
- Key Feature 1: Translation capability integrated into RSS reader
- Key Feature 2: Enhances accessibility for non-native content
Discussion Link, Original Link
Zev – Remember (or discover) terminal commands [Developer Tools]
50 points, 24 comments
Remember or discover terminal commands with Zev.
- Helps recall forgotten terminal commands
- Assists in discovering new commands
- Designed for terminal users
Discussion Link, Original Link
Infat – Declaritive application assocation manager for macOS [Productivity]
48 points, 16 comments
Infat is a declarative application association manager for macOS that simplifies setting up custom file handlers and utilities when switching to a new machine.
- Helps manage custom file handlers and utilities for seamless machine transitions
- Supports advanced configurations like mailto handlers
- Uses XDG_CONFIG_HOME for organization
- Inspired by the duti project
Discussion Link, Original Link
My from-scratch OS kernel that runs DOOM [Developer Tools]
297 points, 75 comments
A from-scratch OS kernel called TacOS that runs a port of DOOM with decent performance.
- Follows UNIX-derived concepts like exec/fork and unix-style VFS
- Uses a custom from-scratch libc
- Requires minimal modifications to run DOOM
- Performance exceeds expectations
Discussion Link, Original Link
Colanode, open-source and local-first Slack and Notion alternative [Productivity]
94 points, 28 comments
An open-source, local-first collaboration app combining Slack-style chats and Notion-style note-taking with full self-hosting capabilities.
- Integrates real-time chat and structured note-taking in one platform
- Open-source (Apache 2.0 license) and fully self-hostable for data control
- Local-first architecture with offline support and SQLite synchronization
- Built with Node.js, Electron, Postgres, Redis, and S3-compatible storage
- Supports multi-server and multi-account connections
- Future-ready for local LLM integrations
Discussion Link, Original Link
I made my own TRMNL e-ink device [Consumer Tech]
48 points, 21 comments
Custom TRMNL e-ink device
- DIY e-ink display
- Terminal-like functionality
- Personal project showcase
Discussion Link, Original Link
I hate cubes, so I vibe coded a game to destroy them [Entertainment]
3 points, 3 comments
A game designed to destroy cubes, created using AI-assisted coding and tools like Godot and Blender.
- Developed with GitHub Copilot and Claude 3.7 for AI-assisted coding
- Built using the Godot game engine
- 3D assets created with Blender
- Focused on cube-destruction gameplay
Discussion Link, Original Link
We made a blazing-fast, open-source GitHub front end [Developer Tools]
12 points, 5 comments
Blazing-fast, open-source GitHub front end.
- Open-source alternative to GitHub's interface
- Optimized for speed and performance
Discussion Link, Original Link
Interactive map of Palo Alto police record log PDFs [Consumer Tech]
3 points, 0 comments
Interactive map visualizing Palo Alto police logs for neighborhood safety assessment.
- Displays nearby police incidents by address
- Covers data from February to April 2025
- Open-source code available on GitHub
- Created for personal use during house hunting
Discussion Link, Original Link
TabTab – A keyboard-first browser workspace for tab hoarders [Productivity]
4 points, 0 comments
TabTab is a keyboard-first browser workspace that helps manage multiple tabs efficiently with a grid-style dashboard.
- Save all open tabs as a collection with one click
- Self-hosted sync via GitHub Gist/WebDAV for privacy
- Keyboard shortcuts and drag-and-drop functionality
- Built with WXT, React, and Tailwind, with AI-assisted UI code generation
Discussion Link, Original Link
GitNote- Online MD note editor that syncs to GitHub [Productivity]
3 points, 1 comments
Online MD note editor that syncs to GitHub.
- Syncs notes directly to GitHub
- Supports Markdown editing
- Online and accessible from anywhere
Discussion Link, Original Link
IdeaKiln – A platform to validate your startup ideas before building [Business]
3 points, 0 comments
A platform for validating startup ideas through community feedback before committing to building.
- Share early-stage ideas, prototypes, or MVPs in rough form
- Get feedback and upvotes from fellow makers
- Gauge idea resonance before investing significant time
- Pivot or refine based on real responses
- No need for polished landing pages or copy
I made an AI copilot for Maps that answers open-ended map questions [Travel]
8 points, 1 comments
An AI-powered interactive map tool that answers open-ended location-based questions and plots journeys.
- Answers questions like "Where can I find coworking cafes with power sockets and Wi-Fi?"
- Plots interactive journeys, such as historical routes or train stops
- Returns live maps with results as pins
- No signup required
- Currently refining AI accuracy and UX based on feedback
Discussion Link, Original Link
Chat with AI copies of all HN users, like sama, dang, and even yourself [ChatBots]
4 points, 8 comments
AI-powered chatbots that mimic Hacker News users based on their comment history.
- Creates personalized AI versions of HN users with at least 200 words of comments
- Processes user history in real-time to generate chatbots on-the-fly
- No login required, conversations are private and not stored or trained on
- Interactive and fun way to engage with virtual versions of HN community members
Discussion Link, Original Link
I built a visual topic explorer for SEOs and content creators [Marketing]
3 points, 2 comments
TopicLoops is a visual topic exploration tool for SEOs and content creators, generating hierarchical mindmaps from web data.
- Automatically creates sunburst diagrams of topic structures
- Helps users explore subtopics and related angles
- Designed for SEOs, founders, and content creators
- Beta version available for feedback
Discussion Link, Original Link
Safari extension that adds Chrome-style bookmark star to the toolbar [Productivity]
3 points, 0 comments
A Safari extension that adds a Chrome-style bookmark star to the toolbar, providing visual feedback and bookmark management tools.
- Adds a star icon to Safari's toolbar, changing color if the page is already bookmarked
- Shows the exact folder(s) where a bookmarked page is stored
- Includes a bookmark analysis feature to identify and clean up duplicates
- Privacy-focused: only checks the active tab's URL, no tracking or data storage
- One-time purchase ($3.99) with no subscriptions or in-app purchases
Discussion Link, Original Link
Type Japanese an app to practice typing Japanese keyboard [Education]
4 points, 0 comments
Practice typing Japanese with a dedicated keyboard app.
- Designed for learning Japanese typing
- Focuses on keyboard practice
- No additional text or context provided
Discussion Link, Original Link
MCP MCP – an MCP server to list MCP servers [Productivity]
3 points, 0 comments
A server to list and discover MCP servers for managing calendars and other tasks.
- Helps users find MCP servers for specific needs like calendar management
- Integrates with MCP clients like Claude for easy querying
- Built as a personal project to explore AI and productivity tools
- Serves as a test case for "vibe coding" development approach
Discussion Link, Original Link
ParseLM – Reliably Structure LLM Outputs for Data and Control Flow [Developer Tools]
4 points, 0 comments
ParseLM helps structure LLM outputs reliably for data and control flow.
- Structures LLM outputs for better data handling
- Ensures reliable control flow in generated content
Discussion Link, Original Link
ProfileMagic – $10 AI LinkedIn headshots (20 photos, look natural) [Image]
3 points, 0 comments
Affordable AI tool that transforms casual selfies into natural-looking LinkedIn headshots.
- Generates 20 professional headshots from uploaded selfies
- Ensures natural appearance without excessive airbrushing
- Simple process with gender selection option
- Priced at $10 for quick, studio-free results