Show - HN Paper

Show HN: GoCard – A file-based spaced repetition system built in Go

Show HN: Play with lasers and mirrors: Jane Street's March puzzle, interactive

Show HN: I Made a Language to Be JavaScript's Nanny

Show HN: Fastrace: A Modern Approach to Distributed Tracing in Rust

Show HN: I made a waitlist directory to promote new apps

Show HN: Captionova – Animated Video Captions, Free and In-Browser

Show HN: I made an AI tool to uncover SaaS opportunities by analyzing Reddit

Show HN: OpenAPISearch – Make APIs Accessible for AI Codegen

Show HN: Conversational AI Journaling App

Show HN: I made a Sonic Pi MCP to make Claude my jamming buddy

Show HN: I made PortfolioKit – A customizable portfolio template with a CMS

Show HN: We made an MCP server so Cursor can debug Node.js on its own

Show HN: Building Backend Framework in Go-Personal Project–Looking for Feedback

Show HN: CodeLingo, Duolingo but for Code

Show HN: AI Runner is now Apache 2.0

Show HN: I made PeanoScript, an educational TypeScript-like theorem prover

Show HN: Sequential Story MCP Server

Show HN: I made an AI profile picture generator

Show HN: FastOpenAPI – automated docs for many Python frameworks

Show HN: macOS app to help you blink more