Show HN Daily Selection (2025-06-04)
- Ephe – A Minimalist Open-Source Markdown Paper for Today
- AirAP AirPlay server - AirPlay to an iOS Device
- An Alfred workflow to open GCP services and browse resources within
- Localize React apps without rewriting code
- Gradle plugin for faster Java compiles
- I wrote a Java decompiler in pure C language
- Controlling 3D models with voice and hand gestures
- PinSend – Share text between devices using a PIN(P2P, no login)
- Mosaique.info – Global news in context (solo dev, no ads, no tracking)
- Asciilator.com
- .NET Threading Mystery Classes
- Use Just Your Voice To Author Flow Charts
- Slurm-web – open-source lightweight web UI for Slurm HPC/AI clusters
- Ultra-lightweight chunker library with emoji support
- SQLxport – Export SQL Query Results to Parquet, CSV, and S3
- I'm Building Ahrefs for AI Search Results
- pgarrow – A SQLAlchemy PostgreSQL dialect for ADBC
- I made a scripting language run in the browser with no HTML
- Psuedocode Expander
- Rethinknig Serverless – Services, Observers, and Actors Now Available
- Legal Eyes – Turn casual text into legalese with one click
- Cmd-K for the Terminal
- Compliant LLM toolkit for ensuring compliance & security of AI systems
- Winhider – Hide windows from screenshare and Taskbar/Taskswitcher
- I built an open source clone of Grok's DeepSearch
- Page Magic: Use AI to customize any web page
- Text to 3D simulation on a map (does history pretty well) with gmaps++
- Bolna AI – Open-source voice AI agents with pluggable LLMs, TTS, ASR
- Datta AI – Get paid when your data trains AI models
Ephe – A Minimalist Open-Source Markdown Paper for Today [Productivity]
27 points, 3 comments
Ephe is an open-source, minimalist Markdown-based daily planner for personal use.
- No sign-up, ads, or subscriptions
- Combines Markdown editing with lightweight to-do functionality
- Built with CodeMirror v6, React 19, and Vite
- Designed for individual daily organization, not team collaboration
Discussion Link, Original Link
AirAP AirPlay server - AirPlay to an iOS Device [Audio]
131 points, 15 comments
AirAP is an AirPlay server that enables audio streaming from a Mac to iOS devices, offering versatile audio playback solutions.
- Streams audio from a Mac to iOS devices via AirPlay
- Useful for testing audio on different devices
- Repurposes old wired speakers wirelessly
- Simple setup for quick audio playback needs
Discussion Link, Original Link
An Alfred workflow to open GCP services and browse resources within [Developer Tools]
35 points, 7 comments
Alfred workflow for quick access to Google Cloud services and resources.
- Instantly open Google Cloud services
- Search GCP resources directly from Alfred
- Fast and simple integration
Discussion Link, Original Link
Localize React apps without rewriting code [Developer Tools]
55 points, 45 comments
An open-source React bundler plugin that localizes apps at build time without modifying code.
- No need to rewrite code or use i18n frameworks
- Works by processing React's AST and using LLMs for translations
- Preserves HTML structure and context for accurate translations
- Supports Hot Module Replacement for real-time UI previews
- Includes aggressive caching for fast incremental builds
- Allows overrides via data-lingo-* attributes
- Compatible with large codebases and parallelized LLM calls
Discussion Link, Original Link
Gradle plugin for faster Java compiles [Developer Tools]
10 points, 7 comments
A Gradle plugin that speeds up Java/Kotlin compilation by using native-image to pre-compile the compiler and Maven dependency resolver.
- Uses native-image to skip JIT warmup, improving startup time
- Produces identical outputs to standard javac but with faster execution
- Supports fetching Maven dependencies with a local cache to avoid re-resolution
- Benchmarked at 100x+ speedup for smaller projects (<10k classes)
- Open to community feedback for further improvements
Discussion Link, Original Link
I wrote a Java decompiler in pure C language [Developer Tools]
140 points, 69 comments
Java decompiler written in pure C language.
- Written in pure C
- Decompiles Java bytecode
- No external dependencies
Discussion Link, Original Link
Controlling 3D models with voice and hand gestures [Consumer Tech]
77 points, 17 comments
A project enabling voice and hand gesture control for 3D model manipulation.
- Voice commands to switch interaction modes (drag, rotate, scale, animate)
- Hand gestures for direct 3D model control
- Supports GLTF model import via drag-and-drop
- Built with three.js, MediaPipe, Web Speech API, Rosebud AI, and Quaternius 3D models
Discussion Link, Original Link
PinSend – Share text between devices using a PIN(P2P, no login) [Text]
50 points, 31 comments
PinSend is a free web app for instantly sharing text between devices using a simple 6-character PIN, with no login or installation required.
- No login, account, or installation needed
- Peer-to-peer WebRTC transfer (no server relay or cloud)
- Cross-platform compatibility on any modern browser
- Frictionless text sharing between devices
- Demo-ready with instant sync via PIN entry
Discussion Link, Original Link
Mosaique.info – Global news in context (solo dev, no ads, no tracking) [Other]
12 points, 2 comments
Global news platform providing contextualized information without ads or tracking.
- Solo developer project
- No advertisements
- No user tracking
- Focus on contextual news presentation
Discussion Link, Original Link
Asciilator.com [Design]
16 points, 17 comments
Asciilator.com is a tool for creating ASCII art.
- Enables users to generate ASCII art
- Simple and straightforward interface
- No additional details provided in the post
Discussion Link, Original Link
.NET Threading Mystery Classes [Developer Tools]
4 points, 1 comments
.NET Threading Mystery Classes
- Introduces mysterious threading classes in .NET
- Likely explores undocumented or lesser-known features
- Targets developers interested in advanced .NET threading concepts
Discussion Link, Original Link
Use Just Your Voice To Author Flow Charts [Productivity]
4 points, 0 comments
Create flowcharts using only voice commands.
- Voice-controlled flowchart creation
- No manual input required
- Streamlined diagramming process
Discussion Link, Original Link
Slurm-web – open-source lightweight web UI for Slurm HPC/AI clusters [Developer Tools]
11 points, 0 comments
Slurm-web is an open-source lightweight web UI for monitoring Slurm HPC/AI clusters in real time.
- Dashboard with interactive charts of resources and jobs status
- Instant jobs filtering and sorting
- Live jobs status update with colored badges
- GPU resources utilization monitoring
- Advanced visualization of node status with racking topology
- Intuitive visualization of QOS and advanced reservations
- Dark mode support
- Multi-clusters support
- LDAP authentication (including Active Directory support)
- Advanced RBAC permissions management
- Transparent caching
- Integration with Prometheus for timeseries metrics
- Backend: Python (Flask) with Slurm REST API
- Frontend: Vue.js and Tailwind CSS
- Easy deployment with native deb and RPM packages
Discussion Link, Original Link
Ultra-lightweight chunker library with emoji support [Developer Tools]
17 points, 4 comments
Ultra-lightweight JavaScript/TypeScript library for chunking various data types with Unicode and emoji support.
- Works with multiple data types (Array, String, Buffer, Set, Map, etc.)
- Supports AsyncIterable for batching streams
- Unicode-safe, handles grapheme clusters and emoji correctly
- Small (~870B) and zero-dependency
- ESM-first and TypeScript-ready
Discussion Link, Original Link
SQLxport – Export SQL Query Results to Parquet, CSV, and S3 [Developer Tools]
5 points, 0 comments
Export SQL query results to Parquet/CSV and optionally upload to S3 or MinIO.
- Supports PostgreSQL and Redshift
- CLI-first and cloud-friendly
- Ideal for data pipelines and engineers
Discussion Link, Original Link
I'm Building Ahrefs for AI Search Results [Business]
5 points, 2 comments
AI search results tracker for businesses to monitor keyword performance across AI tools like ChatGPT and Claude.
- Tracks keyword performance in AI search results
- Supports multiple AI platforms (ChatGPT, Claude, Perplexity)
- Provides visibility into AI-driven search trends
Discussion Link, Original Link
pgarrow – A SQLAlchemy PostgreSQL dialect for ADBC [Developer Tools]
3 points, 0 comments
A SQLAlchemy PostgreSQL dialect for ADBC.
- Enables SQLAlchemy integration with PostgreSQL via ADBC
- Supports efficient data access and manipulation
- Designed for performance and compatibility with PostgreSQL features
Discussion Link, Original Link
I made a scripting language run in the browser with no HTML [Developer Tools]
4 points, 0 comments
OOPSIEWASM is an experimental WebAssembly-based playground for running the W++ scripting language directly in the browser without HTML.
- Runs W++ code in the browser with no C#, JavaScript, or HTML required
- Supports browser canvas APIs via externcall
- Built on Blazor WebAssembly
- Aims to enable web apps without HTML in dev tools
- MIT-licensed and available on GitHub
Discussion Link, Original Link
Psuedocode Expander [Developer Tools]
3 points, 0 comments
A tool that expands pseudocode into detailed steps and generates full code from refined plain-text descriptions.
- Iteratively breaks down pseudocode into more detailed steps
- Allows refining app sections with plain text without writing actual code
- Generates full code from sufficiently detailed pseudocode
- Example: Converts "Fullstack TODO list app" into backend, frontend, and database components
- Supports customization and iteration on specific sections
Discussion Link, Original Link
Rethinknig Serverless – Services, Observers, and Actors Now Available [Developer Tools]
5 points, 0 comments
A new serverless platform offering Services, Observers, and Actors for simplified, efficient, and direct communication between functions.
- Services: Stateless compute blocks enabling direct communication between functions without HTTP overhead.
- Public Services: Accessible via unique URLs for external requests and APIs.
- Internal Services: Enable direct method calls between services, eliminating HTTP latency.
- Observers: Automatically react to changes and events (upcoming feature).
- Actors: Maintain state and coordinate complex workflows (upcoming feature).
- Free Tier Available: Users can try the platform at no cost.
Legal Eyes – Turn casual text into legalese with one click [Business]
5 points, 5 comments
Legal Eyes is a Chrome extension that converts casual text into professional legal language with one click.
- Rewrites messages into sharp, formal legal tone
- Useful for freelancers, founders, or anyone needing a stronger voice
- No prompt engineering or copy-pasting—works directly in the browser
- Built with React, Supabase, OpenAI, and deployed via Vercel
- Free version available with potential monetization in future versions
Discussion Link, Original Link
Cmd-K for the Terminal [Developer Tools]
6 points, 1 comments
Cmd-K for the Terminal
- Quick navigation shortcut for the terminal
- Enhances terminal usability with keyboard commands
Discussion Link, Original Link
Compliant LLM toolkit for ensuring compliance & security of AI systems [Developer Tools]
7 points, 0 comments
Open-source toolkit for identifying and mitigating security vulnerabilities in LLMs like Claude and OpenAI.
- Automates detection of security holes in hosted AI models
- Identifies harmful behaviors like data theft via SQL/code injection
- Detects prompt obfuscation for malware/spyware installation
- Simple installation and dashboard interface via pip
Discussion Link, Original Link
Winhider – Hide windows from screenshare and Taskbar/Taskswitcher [Productivity]
4 points, 0 comments
A Windows tool to hide windows from screenshare and taskbar/task-switcher while keeping them usable.
- Hides windows from screen-sharing software
- Removes windows from taskbar and alt-tab switcher
- Maintains full interactivity with hidden windows
- Offers both CLI and GUI interfaces
- Available via winget and GitHub releases
Discussion Link, Original Link
I built an open source clone of Grok's DeepSearch [Developer Tools]
3 points, 0 comments
Open source clone of Grok's DeepSearch.
- Open source alternative
- Replicates Grok's DeepSearch functionality
Discussion Link, Original Link
Page Magic: Use AI to customize any web page [Productivity]
12 points, 0 comments
AI-powered Chrome extension for customizing web page styles using natural language.
- Uses natural language to modify web pages
- Supports per-page or domain-wide changes
- Tracks prompt history and allows toggling changes
- Estimates cost based on Anthropic API usage (~$0.005 per change)
- Enables visual tweaks like colors, spacing, layout, and element removal
Discussion Link, Original Link
Text to 3D simulation on a map (does history pretty well) with gmaps++ [Consumer Tech]
4 points, 0 comments
A 3D map simulation tool that recreates historical events and predicts future scenarios using Google Maps data.
- Simulates events on 3D maps with historical accuracy
- Includes a timeline feature for tracking events
- Uses Three.js and geospatial libraries for rendering
- Supports custom API keys to avoid quota limits
- Features a MARL model for human behavior simulation (in progress)
- Provides atmospheric effects and realistic visuals
Discussion Link, Original Link
Bolna AI – Open-source voice AI agents with pluggable LLMs, TTS, ASR [Audio]
3 points, 0 comments
An open-source platform for building customizable voice AI agents with pluggable components.
- Supports integration with custom LLMs, telephony systems, transcription models, and voice synthesis tools
- Enables rapid development of voice-based applications for phone calls or browser interactions
- Offers both open-source GitHub repository and hosted no-code/low-code dashboard
- Designed for flexibility and extensibility, inspired by open ecosystems like Elastic stack
Discussion Link, Original Link
Datta AI – Get paid when your data trains AI models [Business]
4 points, 0 comments
Datta AI is a platform that enables users to earn money by contributing their data to train AI models while retaining control over its usage.
- Users connect or upload their data for AI training
- Retain control over how their data is used
- Earn money when their data powers AI systems
- Focus on transparent monetization and privacy
- Aims to create a fairer AI future by compensating data contributors