Show HN Daily Selection (2025-10-10)
- I've built a tiny hand-held keyboard
- GYST – Digital organizer that replicates the feeling of a physical desk
- I built a web framework in C
- I wrote a full text search engine in Go
- 100% open source, logical multi-master PostgreSQL replication
- Open-Source Voice AI Badge Powered by ESP32+WebRTC
- Lore Engine – Turn 10-hour lectures into 2 hours of comprehensive notes
- Summeze – Turn videos into editable LaTeX summaries in seconds
- Created macOS app to help you keep your distance from your screen
- I Built Claude Code for CUDA in 18 Hours (Open Source)
- Browser extension to analyze my son's Math Academy data
- Oneseal – Secrets, configs, and platform outputs as code
- Saoirse, a privacy-first research assistant (Mac Beta)
- I Hid Labubus in World Labs' AI Worlds
- Transcript-based video editor that runs 100% locally on Mac
- JavaScript canvas Pie 3D chart
- Debugg – 0-Config AI browser (E2E) tests that review every commit
- A context aware backend for AI coding agents
- A minimal demo of SIP ↔ WebRTC
- GYST – A new take on the desktop interface (alpha)
I've built a tiny hand-held keyboard [Consumer Tech]
245 points, 73 comments
A hand-held keyboard made using modeling clay instead of 3D printing.
- Uses modeling clay for a unique, handcrafted design
- Compact and portable
- DIY approach without requiring 3D printing
Discussion Link, Original Link
GYST – Digital organizer that replicates the feeling of a physical desk [Productivity]
13 points, 4 comments
GYST is a digital organizer combining file explorer, whiteboard, bookmarking, note-taking, and graphic design into a single lightweight interface.
- Merges multiple tools into one fluid workspace
- Designed to replicate the feel of a physical desk
- Inspired by "second brain" and personal knowledge management concepts
- Currently in alpha stage with a demo video available
- Solo project aimed at reducing tool fragmentation
Discussion Link, Original Link
I built a web framework in C [Developer Tools]
266 points, 138 comments
A web framework built in C.
- Lightweight and efficient
- Written in C for performance
- Suitable for low-resource environments
Discussion Link, Original Link
I wrote a full text search engine in Go [Developer Tools]
66 points, 32 comments
A full-text search engine implemented in Go.
- Written in Go
- Supports full-text search functionality
Discussion Link, Original Link
100% open source, logical multi-master PostgreSQL replication [Developer Tools]
4 points, 0 comments
Open-source logical multi-master PostgreSQL replication solution.
- 100% open source
- Logical replication (not physical)
- Multi-master architecture
- PostgreSQL compatibility
Discussion Link, Original Link
Open-Source Voice AI Badge Powered by ESP32+WebRTC [Consumer Tech]
10 points, 1 comments
An open-source voice AI badge powered by ESP32 and WebRTC for real-time conference assistance.
- Uses ESP32 microcontroller for hardware control
- Connects via WebRTC to an LLM for voice-based queries
- Provides conference-related info like speaker details and session topics
- Built as a workshop/demo project for hardware + WebRTC integration
- Inspired by earlier work with embedded SDK for LiveKit
Discussion Link, Original Link
Lore Engine – Turn 10-hour lectures into 2 hours of comprehensive notes [Education]
8 points, 0 comments
Turn 10-hour lectures into 2 hours of comprehensive notes.
- Converts long lectures into concise notes
- Saves time by reducing content to essential points
- Enhances learning efficiency with summarized material
Discussion Link, Original Link
Summeze – Turn videos into editable LaTeX summaries in seconds [Productivity]
6 points, 0 comments
Turn videos into editable LaTeX summaries in seconds.
- Converts video content to LaTeX format
- Provides editable summaries
- Fast processing (seconds)
Discussion Link, Original Link
Created macOS app to help you keep your distance from your screen [Health]
8 points, 1 comments
A macOS app that uses your camera to monitor screen distance and blurs the screen if you get too close, helping reduce eye strain and improve posture.
- Uses camera to measure distance from the screen
- Blurs the screen if you remain too close for a certain period
- Designed to be minimally disruptive but effective
- Helps with eye strain, double vision, and posture
- No data collection or saved snapshots
- Currently free, with potential future Windows version if there's interest
I Built Claude Code for CUDA in 18 Hours (Open Source) [Developer Tools]
4 points, 0 comments
A CLI tool for AI-assisted CUDA development, open-source and built in 18 hours.
- Writes and debugs CUDA kernels
- Optimizes code for specific GPUs
- Fully agentic AI with tool calling
- Lightweight and fast CLI version of RightNow AI code editor
- Python-based for easy customization and extension
Discussion Link, Original Link
Browser extension to analyze my son's Math Academy data [Education]
3 points, 0 comments
A browser extension to analyze Math Academy student progress by exporting and visualizing activity data.
- Fetches and exports all activity data to JSON and CSV
- Generates detailed stats like XP per minute by course and activity type
- Filters out inactive sessions (over 2 hours) for accurate metrics
- Built with WXT, React, and TypeScript
- Available for Chrome and Firefox via pre-packaged releases
Discussion Link, Original Link
Oneseal – Secrets, configs, and platform outputs as code [Developer Tools]
3 points, 0 comments
Oneseal is a CLI tool that converts platform outputs like Terraform state into typed, versioned SDKs for predictable and diffable consumption.
- Reads outputs such as secrets, URLs, flags, IDs, and connection strings
- Generates TypeScript packages with types and multi-environment selection
- Produces deterministic artifacts safe for committing or publishing internally
Discussion Link, Original Link
Saoirse, a privacy-first research assistant (Mac Beta) [Research]
4 points, 1 comments
Saoirse is a privacy-first research assistant for Mac that runs locally and anonymizes external model requests via a Zero Trust proxy in a Trusted Execution Environment.
- Privacy-focused: Data stays on-device, with anonymized external requests
- Designed for deep work: Supports research, writing, brainstorming, and note-taking
- Free beta: Currently available for Mac users
- Academic focus: Targets students, researchers, and journalists
- Feedback-driven: Seeking input on features, threat models, and usability
Discussion Link, Original Link
I Hid Labubus in World Labs' AI Worlds [Entertainment]
14 points, 25 comments
A Chrome extension game where players search for a daily hidden Labubu character in World Labs' AI-generated marble worlds.
- Daily hidden Labubu character to find
- Interactive game as a Chrome extension
- Uses AI-generated marble worlds from World Labs
- Open-source project available on GitHub
Discussion Link, Original Link
Transcript-based video editor that runs 100% locally on Mac [Video]
4 points, 1 comments
A free Mac app for local, transcript-based video editing with automatic cuts based on text edits.
- Runs 100% locally with no uploads or cloud dependencies
- Uses Whisper for transcription with multiple model size options
- Edits video by modifying text (delete words, rearrange sentences)
- Includes features like filler word removal and gap deletion
- Supports multi-track editing, overlays, and large files
- Optimized for Mac with Metal acceleration
- No subscription fees or usage limits
Discussion Link, Original Link
JavaScript canvas Pie 3D chart [Developer Tools]
3 points, 0 comments
JavaScript canvas Pie 3D chart
- 3D pie chart visualization
- Built with JavaScript canvas
- Interactive and customizable
Discussion Link, Original Link
Debugg – 0-Config AI browser (E2E) tests that review every commit [Developer Tools]
3 points, 0 comments
Debugg is a zero-config AI-powered browser testing tool that automatically reviews every commit or PR to catch unexpected breaks.
- Automatically runs end-to-end tests without manual setup or browser configuration
- Detects and reports issues like broken pages or React hydration errors
- Integrates with GitHub for PR reviews and email notifications
- Uses a crawler agent to learn and map application flows
- Plans to feed test failures back into AI tools for iterative fixes
- Simplifies testing for common manual checks (e.g., page loading)
Discussion Link, Original Link
A context aware backend for AI coding agents [Developer Tools]
10 points, 1 comments
InsForge is an open-source, context-aware backend platform for AI coding agents that provides structured introspection and control over backend components.
- Offers introspection endpoints for schema, relations, functions, triggers, policies, and more
- Provides control endpoints for backend operations typically done via CLI or dashboards
- Includes Postgres, authentication, storage, edge functions, and AI-model endpoints
- Exposes backend metadata and control via an MCP server for agent interaction
- Open-source and self-hostable, with a cloud service option
Discussion Link, Original Link
A minimal demo of SIP ↔ WebRTC [Developer Tools]
3 points, 3 comments
A minimal demo showcasing WebRTC browser client interaction with a SIP signaling server.
- Demonstrates WebRTC browser client registration
- Enables calling and communication via SIP signaling server
- Provides a simple example of SIP ↔ WebRTC integration
Discussion Link, Original Link
GYST – A new take on the desktop interface (alpha) [Productivity]
3 points, 3 comments
GYST is a lightweight desktop interface combining file explorer, whiteboard, bookmarking, note-taking, and graphic design into a unified workspace.
- Merges multiple tools into one fluid space
- Designed to mimic the feel of a physical desk
- Inspired by "second brain" and personal knowledge management concepts
- Alpha version available for testing and feedback