Show HN Daily Selection (2025-06-07)
- AI game animation sprite generator
- CensorIt – Remove vocals or music from uploaded audio files
- EndBOX – A toy-like retro computer for EndBASIC
- Solomon's Agent - a CLI to simplify the web
- Lightweight Durable Workflows Built on Postgres
- An open-source browser extension that integrates difftastic into GitHub
- Instant video edits with local Whisper models (macOS)
- Posture Correction Using AirPods Motion Sensors
- Book to help you build a PostgreSQL-like database server from scratch
- Camus – The World's First Truly Useless AI Agent
- A scriptable text editor for LLMs
- I Built an Agent That Writes Fresh Newsletters for Any Topic
- Memotron – PKM Tool for All
- A Simple Tool to Copy Special Characters and Symbols Easily
AI game animation sprite generator [Developer Tools]
38 points, 37 comments
AI-powered game animation sprite generator that creates high-quality character sprites from a single image.
- Generates animation sprites for various actions (Run, Jump, Punch, Shoryuken, etc.)
- Supports Unity and other game engines with ready-to-use sprite sheets
- Reduces costs for indie developers by eliminating the need for artists/animators
- Offers 10x cost and efficiency savings for studios with large NPC animation needs
- Simple three-step process: upload, choose action, generate
Discussion Link, Original Link
CensorIt – Remove vocals or music from uploaded audio files [Audio]
3 points, 0 comments
CensorIt is a web app that removes vocals or music from selected sections of audio tracks for content filtering.
- Allows users to upload audio files and selectively remove vocals or music
- Designed for filtering explicit lyrics (e.g., for dance studio use)
- Currently free to use with optional Google account login
- Early-stage MVP seeking user feedback for validation
Discussion Link, Original Link
EndBOX – A toy-like retro computer for EndBASIC [Consumer Tech]
4 points, 0 comments
A retro-style toy computer designed for fast booting into EndBASIC, focusing on simple graphical/game programming.
- Fast boot into EndBASIC
- Playful and hackable design
- Focused on simple graphical/game programming
- Includes DOS-like touches
- Potential for kits or prebuilt devices
Discussion Link, Original Link
Solomon's Agent - a CLI to simplify the web [Developer Tools]
3 points, 1 comments
A CLI tool to simplify web interactions.
- Simplifies web interactions via command line
- Designed for ease of use and efficiency
Discussion Link, Original Link
Lightweight Durable Workflows Built on Postgres [Developer Tools]
5 points, 0 comments
DBOS is an open-source Python library for lightweight, durable workflows and queues built on Postgres, designed for easy integration and automatic recovery from failures.
- Lightweight and flexible, requiring minimal setup with no separate workflow server
- Checkpoints state in Postgres for automatic recovery from failures
- Supports durable queues with features like concurrency limits, rate limits, and deduplication
- Programmatic workflow management via Postgres tables for querying, pausing, or resuming workflows
- Full compatibility with both synchronous and asynchronous Python
- Includes dashboards, workflow visualization, and web UI for management
Discussion Link, Original Link
An open-source browser extension that integrates difftastic into GitHub [Developer Tools]
3 points, 0 comments
An open-source browser extension that integrates Difftastic's structural diff tool into GitHub for enhanced diff visualization.
- Integrates Difftastic's structural diff capabilities directly into GitHub
- Provides clearer and more intuitive diff visualization compared to Git's default diffs
- Browser-based solution for easier access without CLI usage
Discussion Link, Original Link
Instant video edits with local Whisper models (macOS) [Video]
5 points, 0 comments
CutWord is a macOS app that enables instant video editing via local Whisper models for voice-command-based cue points during recording.
- Uses local Whisper models for privacy (no data leaves your machine)
- Supports voice commands to mark cue points while recording
- Exports trimmed videos directly or generates FCPXML for Final Cut/DaVinci Resolve
- Built with SwiftUI and AVFoundation
- Available via TestFlight for testing
Discussion Link, Original Link
Posture Correction Using AirPods Motion Sensors [Health]
7 points, 1 comments
Posture correction using AirPods motion sensors to monitor and improve sitting posture.
- Utilizes AirPods' built-in motion sensors for real-time posture tracking
- Provides alerts or feedback when poor posture is detected
- Potential for integration with health or fitness apps
Discussion Link, Original Link
Book to help you build a PostgreSQL-like database server from scratch [Education]
4 points, 0 comments
A book that teaches you how to build a PostgreSQL-like database server from scratch through practical coding and experimentation.
- Learn SQL parsing and type checking
- Execute complex queries (JOIN, GROUP BY)
- Includes challenge exercises for extensions
- Compares with real databases (PostgreSQL, MySQL, SQLite, DuckDB)
- Language-agnostic implementation
- Comes with a test suite for development and refactoring
- Discount code available for purchase
Discussion Link, Original Link
Camus – The World's First Truly Useless AI Agent [Entertainment]
3 points, 0 comments
Camus is a completely useless AI agent designed as a humorous or satirical project.
- Designed to be intentionally non-functional
- Serves as a parody of AI hype
- No practical applications or utility
Discussion Link, Original Link
A scriptable text editor for LLMs [Developer Tools]
3 points, 1 comments
A scriptable text editor for LLMs that expresses edits as operations rather than diffs.
- Designed to explore if LLMs perform better with operation-based edits
- Uses a simplified, scriptable approach inspired by sed and Emacs
- Currently supports Claude for generating fake elisp scripts
- Intentionally naïve implementation for experimentation
- Seeks collaborators to develop the concept further
Discussion Link, Original Link
I Built an Agent That Writes Fresh Newsletters for Any Topic [Text]
5 points, 2 comments
An AI-powered agent that automatically researches and generates up-to-date newsletters on any topic.
- Uses Firecrawl Search API for real-time web scraping
- Leverages Nebius AI models for fast and cost-effective inference
- Built with Agno Agent Framework and Streamlit for UI
- Modular and lightweight design for easy customization
- Open-source code available on GitHub for further development
- Potential future feature: multi-topic newsletter support
Memotron – PKM Tool for All [Productivity]
4 points, 0 comments
Memotron is a personal knowledge management (PKM) tool designed for broad usability.
- Broad usability for various users
- Focused on personal knowledge management
- No additional details provided in the post
Discussion Link, Original Link
A Simple Tool to Copy Special Characters and Symbols Easily [Productivity]
3 points, 0 comments
A minimal, client-side tool for quickly finding and copying special characters and symbols.
- Focused on speed and minimal UI
- Fully client-side with no tracking or login
- Symbols grouped by type (arrows, currency, emoji-like, etc.)
- Mobile-friendly