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Show HN: Postel – Turn your knowledge base into Reddit, X, and LinkedIn posts

Show HN: A challenging Android game built using Flutter and Flame Engine

Show HN: BookmarkFS – A pseudo-filesystem for managing web browser bookmarks

Show HN: Corral – A Visual Logic Puzzle About Enclosing Numbers

Show HN: YesRTOS – A lightweight RTOS from scratch in modern C++

Show HN: OCR pipeline for ML training (tables, diagrams, math, multilingual)

Show HN: Simple AI Crypto Agent for busy people

Show HN: PokemonGym – 387 milestones designed to test agents and LLMs

Show HN: TextZen – Lightweight Obsidian Alternative for macOS

Show HN: Yet another client app for reading Hacker News

Show HN: A tool for creating blackout poetry

Show HN: Active MCP - A Rails engine that provides MCP capabilities to Rails app

Show HN: Skype is closing down, I built a replacement

Show HN: Tool to Visualize Your Financial Runway

Show HN: I made a Chrome Extension that transforms the way you save Etsy items

Show HN: Automatic Python shebang lines for venv and conda environment finding

Show HN: Clawtype v2.1 – a one-hand chorded USB keyboard and mouse [video]

Show HN: Constant reminders until you respond or snooze

Show HN: RealFitForm – Perfect your exercise form with AI

Show HN: SwiftHive – A Swift Package Registry for Faster Builds